ASTROSAT CZTI

Data Quality Report

Orbit 20160813_G05_207T01_9000000596_level2

Creation date: 2025-11-04T19:16:05.733567
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/AS1G05_207T01_9000000596cztM0_level2.fits modeM0/AS1G05_207T01_9000000596cztM0_level2_quad_clean.evt
Size (bytes)369,619,200373,501,440
Size352.5 MB 356.2 MB
Events in quadrant A2,244,4522,297,287
Events in quadrant B2,177,8922,323,359
Events in quadrant C2,035,7321,854,461
Events in quadrant D1,895,3921,999,258

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0853350
B0896400
C01364120
D0972080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08460
B08460
C08460
D08460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A413046961.685067%
B413048812.132965%
C41304598014.478017%
D4130415843.834980%

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 47374 41300 0 0 0.00% 0.00%
B 47374 41300 0 0 0.00% 0.00%
C 47374 41018 0 0 0.00% 0.00%
D 47374 41197 0 0 0.00% 0.00%

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 0 29 2193 10.9 581 540 151.7
A 14 188 2174 10.77 581 540 151.7
A 7 110 1875 8.8 581 540 151.7
B 2 9 1894 11.34 573 543 119.1
B 12 226 1553 8.48 573 543 119.1
B 5 128 1525 8.24 573 543 119.1
C 1 80 1531 7.15 537 495 144.8
C 1 81 1527 7.13 537 495 144.8
C 3 158 1353 5.92 537 495 144.8
D 11 82 1444 6.55 540 489 145.8
D 3 14 1382 6.12 540 489 145.8
D 6 231 1374 6.07 540 489 145.8

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