ASTROSAT CZTI

Data Quality Report

Orbit 20200402_A07_001T01_9000003598_level2

Creation date: 2025-12-10T09:21:43.895595
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/AS1A07_001T01_9000003598cztM0_level2.fits modeM0/AS1A07_001T01_9000003598cztM0_level2_quad_clean.evt
Size (bytes)147,476,160110,332,800
Size140.6 MB 105.2 MB
Events in quadrant A924,452614,115
Events in quadrant B883,846618,608
Events in quadrant C877,044570,150
Events in quadrant D777,236533,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0302340
B0310750
C0313620
D0320010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14544590.405666%
B145441340.921342%
C145441270.873212%
D14544490.336909%

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 18099 14543 0 0 0.00% 0.00%
B 18099 14543 0 0 0.00% 0.00%
C 18099 14543 0 0 0.00% 0.00%
D 18099 14543 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 29 885 10.76 240 228 61.0
A 7 110 731 8.24 240 228 61.0
A 9 19 724 8.13 240 228 61.0
B 2 9 711 10.23 234 225 47.5
B 5 128 604 7.98 234 225 47.5
B 5 255 602 7.93 234 225 47.5
C 12 241 633 6.99 231 218 59.4
C 12 249 620 6.77 231 218 59.4
C 12 250 615 6.68 231 218 59.4
D 6 231 587 6.42 221 202 59.9
D 10 113 570 6.14 221 202 59.9
D 15 46 565 6.06 221 202 59.9

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