ASTROSAT CZTI

Data Quality Report

Orbit 57127

Creation date: 2026-04-20T01:48:57.360329
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_083T10_9000006566_57127cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57127cztM0_level2_quad_clean.evt
Size (bytes)1,989,512,640308,393,280
Size1.9 GB 294.1 MB
Events in quadrant A10,775,7422,250,194
Events in quadrant B13,937,9742,292,866
Events in quadrant C29,712,3471,205,106
Events in quadrant D17,403,6921,975,469

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0484544
B0580964
C01043915
D0681854

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234481920.818833%
B2344912595.369099%
C23448989842.212555%
D2344811294.814910%

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 25693 23453 13 13 0.05% 0.06%
B 25694 23453 879 879 3.42% 3.75%
C 25693 23452 7601 7601 29.58% 32.41%
D 25693 23453 1124 1124 4.37% 4.79%

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 14 798541 1274.3 2540 2480 624.7
A 10 251 44530 67.31 2540 2480 624.7
A 5 113 33488 49.64 2540 2480 624.7
B 10 16 3602627 6906.61 2422 2327 521.3
B 5 172 222404 422.18 2422 2327 521.3
B 0 213 103228 193.56 2422 2327 521.3
C 15 198 19117180 40451.52 1730 1715 472.6
C 13 3 1375032 2906.17 1730 1715 472.6
C 12 252 1180919 2495.39 1730 1715 472.6
D 15 142 4499081 6583.49 2410 2298 683.0
D 2 120 1177465 1720.5 2410 2298 683.0
D 2 249 508593 741.24 2410 2298 683.0

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