ASTROSAT CZTI

Data Quality Report

Orbit 56429

Creation date: 2026-03-04T01:37:14.289619
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_083T05_9000006554_56429cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56429cztM0_level2_quad_clean.evt
Size (bytes)661,705,92086,103,360
Size631.1 MB 82.1 MB
Events in quadrant A5,296,947579,435
Events in quadrant B6,710,016535,225
Events in quadrant C5,547,804532,577
Events in quadrant D6,423,016495,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205412
B0244801
C0212321
D0237801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66586099.146891%
B6658152422.889757%
C665975511.338039%
D665987013.065025%

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 7473 6659 518 518 6.93% 7.78%
B 7473 6659 1072 1072 14.34% 16.10%
C 7474 6660 606 606 8.11% 9.10%
D 7474 6660 950 950 12.71% 14.26%

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 62 1336161 7941.21 677 660 168.2
A 12 3 353996 2101.02 677 660 168.2
A 8 249 309849 1838.51 677 660 168.2
B 4 206 3524092 25882.93 632 610 136.1
B 5 185 317729 2329.5 632 610 136.1
B 4 171 76819 559.82 632 610 136.1
C 12 254 1710604 9757.96 632 627 175.2
C 15 230 395622 2254.03 632 627 175.2
C 15 147 229675 1307.06 632 627 175.2
D 8 160 1763485 9620.62 643 615 183.2
D 2 249 406592 2215.56 643 615 183.2
D 8 129 369497 2013.12 643 615 183.2

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