ASTROSAT CZTI

Data Quality Report

Orbit 20191204_A07_112T01_9000003360_level2

Creation date: 2025-12-06T15:22:20.786446
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/AS1A07_112T01_9000003360cztM0_level2.fits modeM0/AS1A07_112T01_9000003360cztM0_level2_quad_clean.evt
Size (bytes)842,754,240662,137,920
Size803.7 MB 631.5 MB
Events in quadrant A5,303,7603,786,805
Events in quadrant B5,047,5763,796,740
Events in quadrant C5,186,9043,642,701
Events in quadrant D4,380,5463,222,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01718860
B01748660
C01739820
D02395470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016680
B016680
C016680
D016680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A817069521.165153%
B8171011621.422103%
C8172215101.847728%
D8173164297.866048%

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 105616 81766 0 0 0.00% 0.00%
B 105616 81744 0 0 0.00% 0.00%
C 105616 81774 0 0 0.00% 0.00%
D 105616 81643 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 0 29 5067 11.06 1383 1297 340.7
A 7 110 4141 8.35 1383 1297 340.7
A 0 30 3968 7.84 1383 1297 340.7
B 2 9 3950 10.1 1336 1277 264.6
B 3 80 3409 8.06 1336 1277 264.6
B 5 128 3405 8.04 1336 1277 264.6
C 3 126 3535 6.49 1372 1288 346.3
C 9 209 3432 6.19 1372 1288 346.3
C 2 191 3426 6.17 1372 1288 346.3
D 3 14 3073 5.84 1253 1146 329.9
D 10 189 3049 5.77 1253 1146 329.9
D 6 231 3016 5.67 1253 1146 329.9

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