ASTROSAT CZTI

Data Quality Report

Orbit 15270

Creation date: 2024-06-27T17:06:07.496322
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/AS1A04_207T01_9000002254_15270cztM0_level2.evt modeM0/AS1A04_207T01_9000002254_15270cztM0_level2_quad_clean.evt
Size (bytes)508,389,12098,792,640
Size484.8 MB 94.2 MB
Events in quadrant A3,374,772653,045
Events in quadrant B3,575,823658,676
Events in quadrant C4,104,357632,892
Events in quadrant D3,911,003604,264

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141003
B0146052
C0164342
D0157972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6354811.274788%
B63541161.825622%
C6354751.180359%
D63542363.714196%

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 7690 6356 3 3 0.04% 0.05%
B 7690 6356 22 22 0.29% 0.35%
C 7690 6356 28 28 0.36% 0.44%
D 7690 6356 179 179 2.33% 2.82%

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 12 189 124866 732.26 834 818 169.4
A 9 143 30501 175.22 834 818 169.4
A 0 226 7581 39.92 834 818 169.4
B 10 16 114223 728.01 829 812 155.8
B 0 229 64218 407.02 829 812 155.8
B 0 219 41254 259.61 829 812 155.8
C 3 233 1008418 5517.88 790 797 182.6
C 3 9 15121 78.44 790 797 182.6
C 13 61 5628 26.46 790 797 182.6
D 2 33 244484 1268.95 787 765 192.1
D 13 172 236684 1228.34 787 765 192.1
D 7 38 181988 943.56 787 765 192.1

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