ASTROSAT CZTI

Data Quality Report

Orbit 53348

Creation date: 2025-08-08T17:51:36.863391
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/AS1C09_011T08_9000006492_53348cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53348cztM0_level2_quad_clean.evt
Size (bytes)2,092,841,280200,681,280
Size1.9 GB 191.4 MB
Events in quadrant A11,824,0171,441,281
Events in quadrant B15,746,7591,364,576
Events in quadrant C32,239,015753,820
Events in quadrant D16,363,8431,353,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0471472
B0584582
C01073742
D0608652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1683614938.867902%
B16836309518.383226%
C16836898453.361844%
D1683710075.980875%

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 17396 16837 1213 1213 6.97% 7.20%
B 17396 16836 2142 2142 12.31% 12.72%
C 17395 16835 8427 8427 48.44% 50.06%
D 17397 16837 989 989 5.68% 5.87%

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 15 174 4471514 10528.25 1698 1657 424.6
A 11 3 160258 373.57 1698 1657 424.6
A 0 8 152675 355.71 1698 1657 424.6
B 2 249 6333613 18644.26 1591 1532 339.6
B 4 206 622088 1827.17 1591 1532 339.6
B 10 28 428466 1257.07 1591 1532 339.6
C 15 158 8104825 23461.71 1267 1255 345.4
C 1 241 7089720 20522.75 1267 1255 345.4
C 15 178 4778004 13829.79 1267 1255 345.4
D 2 172 6805049 14298.31 1679 1603 475.8
D 2 249 1276594 2679.56 1679 1603 475.8
D 2 62 565337 1184.76 1679 1603 475.8

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