ASTROSAT CZTI

Data Quality Report

Orbit 58409

Creation date: 2026-07-15T06:38:14.754226
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_045T01_9000006590_58409cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58409cztM0_level2_quad_clean.evt
Size (bytes)2,528,438,400285,091,200
Size2.4 GB 271.9 MB
Events in quadrant A23,317,8121,981,131
Events in quadrant B35,650,4651,229,046
Events in quadrant C16,502,3782,000,389
Events in quadrant D16,387,5651,869,340

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04580
B04580
C04580
D04580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0849854
B012147018
C0648434
D0642364

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22531239010.607607%
B225291138150.517111%
C2253112855.703253%
D2253212505.547666%

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 37721 22535 1517 1517 4.02% 6.73%
B 37721 22530 7596 7596 20.14% 33.72%
C 37722 22536 977 977 2.59% 4.34%
D 37722 22536 992 992 2.63% 4.40%

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 12 114 5064326 8565.8 2393 2334 591.0
A 3 14 4781380 8087.0 2393 2334 591.0
A 7 64 1652701 2792.72 2393 2334 591.0
B 6 255 21539526 55861.78 1805 1733 385.6
B 5 172 5028257 13037.11 1805 1733 385.6
B 4 158 598642 1548.18 1805 1733 385.6
C 9 38 1535471 2349.57 2379 2357 652.5
C 15 147 1283970 1964.14 2379 2357 652.5
C 13 3 1145635 1752.13 2379 2357 652.5
D 8 240 2729070 4053.55 2361 2256 672.7
D 12 110 1263855 1875.43 2361 2256 672.7
D 12 248 577596 855.27 2361 2256 672.7

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