ASTROSAT CZTI

Data Quality Report

Orbit 20230810_A09_002T01_9000005810_level2

Creation date: 2023-08-15T12:38:53.885169
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/AS1A09_002T01_9000005810cztM0_level2.fits modeM0/AS1A09_002T01_9000005810cztM0_level2_quad_clean.evt
Size (bytes)488,747,520701,395,200
Size466.1 MB 668.9 MB
Events in quadrant A2,917,8404,563,876
Events in quadrant B2,783,6204,545,161
Events in quadrant C2,846,3544,397,723
Events in quadrant D2,462,8363,947,680

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01187390
B01168460
C01216160
D01365640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02030
B02030
C02030
D02030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011300
B011300
C011300
D011300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552431720.311352%
B552464650.841690%
C552399591.736092%
D5524717653.194744%

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 75648 55248 0 0 0.00% 0.00%
B 75648 55247 0 0 0.00% 0.00%
C 75649 55248 0 0 0.00% 0.00%
D 75649 55241 0 0 0.00% 0.00%

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 9 19 2454 9.04 760 715 192.3
A 0 29 2373 8.62 760 715 192.3
A 7 110 2330 8.4 760 715 192.3
B 2 9 2402 12.14 735 704 139.9
B 3 80 2034 9.51 735 704 139.9
B 3 17 1934 8.79 735 704 139.9
C 1 81 2377 8.6 753 707 194.2
C 3 203 2318 8.3 753 707 194.2
C 3 202 2289 8.15 753 707 194.2
D 7 3 1878 6.55 704 644 188.3
D 6 38 1824 6.27 704 644 188.3
D 3 14 1823 6.26 704 644 188.3

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