ASTROSAT CZTI

Data Quality Report

Orbit 36067

Creation date: 2022-08-10T04:18:19.720613
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/AS1T04_069T01_9000005158_36067cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36067cztM0_level2_quad_clean.evt
Size (bytes)972,915,84095,313,600
Size927.8 MB 90.9 MB
Events in quadrant A4,412,682617,465
Events in quadrant B5,951,709580,483
Events in quadrant C12,147,299480,473
Events in quadrant D6,327,093563,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192203
B0237366
C0423602
D0252322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9280160.172414%
B92784895.270532%
C9280288331.066810%
D92804785.150862%

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 12265 9282 4 4 0.03% 0.04%
B 12265 9281 353 353 2.88% 3.80%
C 12264 9281 2509 2509 20.46% 27.03%
D 12265 9282 451 451 3.68% 4.86%

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 10 83 244985 1143.87 1051 1029 213.3
A 9 143 51043 234.51 1051 1029 213.3
A 12 189 30660 138.93 1051 1029 213.3
B 5 172 994423 5058.54 1020 990 196.4
B 5 236 332433 1687.7 1020 990 196.4
B 0 213 197181 999.0 1020 990 196.4
C 9 187 7035633 35504.78 851 858 198.1
C 4 254 554387 2793.68 851 858 198.1
C 15 208 436783 2200.13 851 858 198.1
D 12 17 750984 3032.3 999 969 247.3
D 12 6 404218 1630.33 999 969 247.3
D 1 52 349794 1410.29 999 969 247.3

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