ASTROSAT CZTI

Data Quality Report

Orbit 45052

Creation date: 2024-06-27T23:09:24.434957
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/AS1A13_020T01_9000006040_45052cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45052cztM0_level2_quad_clean.evt
Size (bytes)596,917,440108,576,000
Size569.3 MB 103.5 MB
Events in quadrant A5,428,626741,929
Events in quadrant B3,558,634765,761
Events in quadrant C3,249,774746,335
Events in quadrant D9,358,336582,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206772
B0147892
C0139432
D0323414

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64671201.855574%
B64671392.149374%
C6468640.989487%
D6467126519.560847%

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 7627 6468 31 31 0.41% 0.48%
B 7627 6468 62 62 0.81% 0.96%
C 7628 6469 27 27 0.35% 0.42%
D 7627 6468 1178 1178 15.45% 18.21%

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 10 83 2419680 15450.75 756 740 156.6
A 13 248 45112 283.42 756 740 156.6
A 7 3 29977 186.75 756 740 156.6
B 5 255 335852 2283.99 751 728 146.7
B 4 171 94766 640.9 751 728 146.7
B 5 32 33094 220.59 751 728 146.7
C 14 254 102942 575.46 754 759 177.6
C 12 250 80963 451.68 754 759 177.6
C 1 3 78574 438.23 754 759 177.6
D 11 241 2136440 12075.37 700 679 176.9
D 13 174 2024638 11443.26 700 679 176.9
D 13 249 1227037 6933.7 700 679 176.9

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