ASTROSAT CZTI

Data Quality Report

Orbit 36015

Creation date: 2022-08-09T19:12:39.465363
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/AS1T04_069T01_9000005158_36015cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36015cztM0_level2_quad_clean.evt
Size (bytes)474,811,20049,579,200
Size452.8 MB 47.3 MB
Events in quadrant A2,712,443296,777
Events in quadrant B3,445,087281,188
Events in quadrant C3,890,371293,921
Events in quadrant D3,984,838270,150

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108303
B0131242
C0148962
D0151192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A511270.136933%
B51122554.988263%
C51122234.362285%
D51122194.284038%

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 7235 5113 0 0 0.00% 0.00%
B 7235 5113 199 199 2.75% 3.89%
C 7234 5112 189 189 2.61% 3.70%
D 7235 5113 178 178 2.46% 3.48%

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 163680 1233.75 656 645 132.1
A 13 254 8638 60.49 656 645 132.1
A 13 6 7928 55.11 656 645 132.1
B 5 172 655791 5449.62 641 626 120.2
B 4 171 153958 1275.41 641 626 120.2
B 15 32 43163 353.82 641 626 120.2
C 9 187 1074541 7466.72 628 634 143.8
C 15 214 211828 1468.4 628 634 143.8
C 0 10 114944 794.78 628 634 143.8
D 12 227 838369 5428.49 632 617 154.3
D 12 6 388085 2510.72 632 617 154.3
D 12 17 67826 435.5 632 617 154.3

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