ASTROSAT CZTI

Data Quality Report

Orbit 20180404_G08_029T01_9000002010_level2

Creation date: 2025-11-20T14:22:26.567454
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/AS1G08_029T01_9000002010cztM0_level2.fits modeM0/AS1G08_029T01_9000002010cztM0_level2_quad_clean.evt
Size (bytes)298,094,400306,443,520
Size284.3 MB 292.2 MB
Events in quadrant A1,869,5961,948,749
Events in quadrant B1,767,2881,900,545
Events in quadrant C1,792,8221,816,747
Events in quadrant D1,526,3041,543,536

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0636300
B0705920
C0637970
D0857460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A301227322.430118%
B3012210703.552221%
C301224931.636678%
D3012224037.977558%

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 33751 30121 0 0 0.00% 0.00%
B 33751 30118 0 0 0.00% 0.00%
C 33751 30121 0 0 0.00% 0.00%
D 33751 30120 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 1717 10.29 487 455 122.6
A 7 110 1499 8.52 487 455 122.6
A 9 19 1349 7.29 487 455 122.6
B 2 9 1537 11.56 466 444 94.6
B 5 225 1169 7.67 466 444 94.6
B 3 17 1151 7.48 466 444 94.6
C 3 126 1239 6.47 474 441 123.3
C 2 191 1228 6.38 474 441 123.3
C 9 233 1212 6.25 474 441 123.3
D 6 231 1098 6.03 436 397 116.2
D 7 5 1084 5.91 436 397 116.2
D 10 113 1071 5.8 436 397 116.2

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