ASTROSAT CZTI

Data Quality Report

Orbit 56589

Creation date: 2026-03-14T21:21:03.720969
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_083T06_9000006558_56589cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56589cztM0_level2_quad_clean.evt
Size (bytes)649,235,52091,045,440
Size619.2 MB 86.8 MB
Events in quadrant A9,153,570503,237
Events in quadrant B3,982,496678,504
Events in quadrant C4,610,892567,036
Events in quadrant D5,767,387541,249

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320281
B0163001
C0185901
D0216861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691161324.107009%
B66911141.703781%
C66905357.997010%
D66904977.428999%

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 7456 6691 1407 1407 18.87% 21.03%
B 7456 6691 43 43 0.58% 0.64%
C 7455 6690 503 503 6.75% 7.52%
D 7455 6690 472 472 6.33% 7.06%

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 7 64 6037546 36640.56 663 646 164.8
A 13 248 219217 1326.6 663 646 164.8
A 4 95 136273 823.18 663 646 164.8
B 5 185 765347 4949.19 713 686 154.5
B 4 21 132074 850.4 713 686 154.5
B 0 153 75279 482.8 713 686 154.5
C 15 230 1625661 8834.65 673 667 183.9
C 13 3 221739 1201.91 673 667 183.9
C 12 252 59164 318.03 673 667 183.9
D 8 240 614167 3165.81 683 652 193.8
D 6 239 611066 3149.81 683 652 193.8
D 14 52 597537 3080.0 683 652 193.8

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