ASTROSAT CZTI

Data Quality Report

Orbit 20210917_A10_005T01_9000004700_level2

Creation date: 2021-09-23T18:04:12.631229
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_005T01_9000004700cztM0_level2_bc.evt modeM0/AS1A10_005T01_9000004700cztM0_level2_quad_clean.evt
Size (bytes)17,047,961,2803,759,503,040
Size15.9 GB 3.5 GB
Events in quadrant A65,999,22224,987,793
Events in quadrant B165,871,51423,740,739
Events in quadrant C94,674,88422,895,956
Events in quadrant D169,989,34422,265,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06154500
B09757150
C07614870
D09676520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059380
B059380
C059380
D059380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29165340941.403723%
B291646176506.051857%
C291649222167.617376%
D291652173235.939613%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 337679 291661 206 206 0.06% 0.07%
B 337679 291650 688 688 0.20% 0.24%
C 337679 291633 1184 1184 0.35% 0.41%
D 337679 291642 2306 2306 0.68% 0.79%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 1639059 479.16 15771 15546 3388.3
A 9 143 1374093 400.95 15771 15546 3388.3
A 13 6 728336 210.37 15771 15546 3388.3
B 6 159 81100990 27495.52 15459 15095 2949.1
B 5 172 15020758 5088.29 15459 15095 2949.1
B 0 190 3201907 1080.62 15459 15095 2949.1
C 0 10 21443363 6150.09 14723 14701 3484.3
C 3 233 9683045 2774.84 14723 14701 3484.3
C 15 208 2132503 607.82 14723 14701 3484.3
D 8 195 75110482 21712.0 15142 14708 3458.7
D 13 249 8765457 2530.05 15142 14708 3458.7
D 13 174 4722364 1361.1 15142 14708 3458.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter