ASTROSAT CZTI

Data Quality Report

Orbit 20200626_A09_006T05_9000003736_level2

Creation date: 2025-12-13T01:29:49.794714
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/AS1A09_006T05_9000003736cztM0_level2.fits modeM0/AS1A09_006T05_9000003736cztM0_level2_quad_clean.evt
Size (bytes)76,775,04024,347,520
Size73.2 MB 23.2 MB
Events in quadrant A473,76452,599
Events in quadrant B452,87248,282
Events in quadrant C455,53845,582
Events in quadrant D393,45539,768

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01640
C01600
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0140
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178850
B0166760
C0164430
D0210390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79261311.652788%
B78961331.684397%
C79221642.070184%
D78653634.615385%

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 8759 7758 0 0 0.00% 0.00%
B 8759 7737 0 0 0.00% 0.00%
C 8759 7756 0 0 0.00% 0.00%
D 8759 7725 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 14 188 491 11.6 123 115 32.4
A 0 29 415 9.25 123 115 32.4
A 14 204 412 9.16 123 115 32.4
B 2 9 384 10.59 119 114 25.5
B 2 8 340 8.86 119 114 25.5
B 5 255 323 8.2 119 114 25.5
C 12 241 321 6.4 120 112 32.7
C 7 111 316 6.25 120 112 32.7
C 3 158 314 6.19 120 112 32.7
D 3 14 320 7.1 111 102 30.7
D 3 31 287 6.03 111 102 30.7
D 13 238 285 5.96 111 102 30.7

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