ASTROSAT CZTI

Data Quality Report

Orbit 58845

Creation date: 2026-08-13T13:08:47.433335
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/AS1A14_106T01_9000006596_58845cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58845cztM0_level2_quad_clean.evt
Size (bytes)578,949,12082,169,280
Size552.1 MB 78.4 MB
Events in quadrant A10,975,166213,520
Events in quadrant B3,075,175680,985
Events in quadrant C3,229,203601,478
Events in quadrant D3,668,397560,395

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368134
B0132061
C0137001
D0150211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6191437070.586335%
B6192851.372739%
C6192861.388889%
D61921562.519380%

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 7346 6192 2904 2904 39.53% 46.90%
B 7347 6193 22 22 0.30% 0.36%
C 7347 6193 48 48 0.65% 0.78%
D 7347 6193 113 113 1.54% 1.82%

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 3 95 4703547 50680.55 371 361 92.8
A 3 14 3001834 32343.24 371 361 92.8
A 15 233 1109231 11948.95 371 361 92.8
B 5 172 96293 633.57 706 683 150.9
B 10 247 39668 258.34 706 683 150.9
B 0 186 33068 214.6 706 683 150.9
C 2 255 143260 751.52 687 682 189.7
C 6 223 123947 649.73 687 682 189.7
C 12 252 83430 436.16 687 682 189.7
D 8 160 743753 3827.65 684 653 194.1
D 5 38 81509 416.48 684 653 194.1
D 7 222 46123 234.21 684 653 194.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct