ASTROSAT CZTI

Data Quality Report

Orbit 15576

Creation date: 2024-06-27T17:10:25.529619
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_198T01_9000002308_15576cztM0_level2.evt modeM0/AS1A04_198T01_9000002308_15576cztM0_level2_quad_clean.evt
Size (bytes)465,448,32084,147,840
Size443.9 MB 80.2 MB
Events in quadrant A3,218,528532,912
Events in quadrant B3,653,605536,114
Events in quadrant C3,253,933515,789
Events in quadrant D3,530,999512,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133973
B0147122
C0134292
D0144292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461640.990559%
B64611201.857298%
C6461771.191766%
D6461610.944126%

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 7602 6464 2 2 0.03% 0.03%
B 7602 6463 36 36 0.47% 0.56%
C 7602 6463 0 0 0.00% 0.00%
D 7602 6464 15 15 0.20% 0.23%

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 13 248 21402 123.2 830 813 167.1
A 9 143 7973 42.85 830 813 167.1
A 0 226 7408 39.46 830 813 167.1
B 5 65 178147 1148.48 818 798 154.4
B 3 64 86246 553.34 818 798 154.4
B 4 173 58603 374.33 818 798 154.4
C 14 238 123252 675.7 790 796 181.2
C 3 233 39772 215.07 790 796 181.2
C 0 207 5878 28.04 790 796 181.2
D 1 52 220927 1064.87 807 786 206.7
D 2 16 51404 244.85 807 786 206.7
D 15 0 41983 199.28 807 786 206.7

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