ASTROSAT CZTI

Data Quality Report

Orbit 24137

Creation date: 2024-06-27T19:02:32.659803
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_069T01_9000003570_24137cztM0_level2.evt modeM0/AS1A07_069T01_9000003570_24137cztM0_level2_quad_clean.evt
Size (bytes)1,080,262,080163,592,640
Size1.0 GB 156.0 MB
Events in quadrant A6,084,3571,070,387
Events in quadrant B6,224,9911,080,005
Events in quadrant C6,479,4101,024,882
Events in quadrant D13,060,146891,936

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264743
B0267423
C0272233
D0474703

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128351060.825867%
B128351411.098559%
C128351501.168679%
D12835233318.176860%

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 14150 12836 1 1 0.01% 0.01%
B 14150 12836 2 2 0.01% 0.02%
C 14150 12837 0 0 0.00% 0.00%
D 14150 12836 1777 1777 12.56% 13.84%

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 3 1 23520 69.28 1569 1535 317.4
A 13 254 22534 66.17 1569 1535 317.4
A 3 137 13989 39.24 1569 1535 317.4
B 0 189 75552 247.98 1558 1520 298.5
B 12 111 36736 117.96 1558 1520 298.5
B 11 111 32511 103.81 1558 1520 298.5
C 10 91 381256 1076.42 1497 1509 352.8
C 14 238 234598 660.71 1497 1509 352.8
C 1 16 10779 26.28 1497 1509 352.8
D 7 238 7190548 21066.39 1395 1355 341.3
D 1 52 259522 756.5 1395 1355 341.3
D 8 195 235572 686.32 1395 1355 341.3

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