ASTROSAT CZTI

Data Quality Report

Orbit 35574

Creation date: 2022-04-27T20:37:03.258104
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/AS1T05_026T01_9000005092_35574cztM0_level2.evt modeM0/AS1T05_026T01_9000005092_35574cztM0_level2_quad_clean.evt
Size (bytes)735,517,440115,084,800
Size701.4 MB 109.8 MB
Events in quadrant A4,515,156720,302
Events in quadrant B6,390,564700,809
Events in quadrant C5,335,776729,705
Events in quadrant D5,411,264696,498

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194522
B0250592
C0213622
D0218842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9192840.913838%
B91928198.909922%
C9192910.989991%
D91921341.457789%

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 11818 9194 68 68 0.58% 0.74%
B 11818 9194 577 577 4.88% 6.28%
C 11818 9194 69 69 0.58% 0.75%
D 11818 9194 109 109 0.92% 1.19%

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 15 169 318016 1512.44 1037 1013 209.6
A 10 83 175712 833.5 1037 1013 209.6
A 13 6 18166 81.84 1037 1013 209.6
B 5 172 2272777 11849.59 1000 970 191.7
B 5 200 136382 706.3 1000 970 191.7
B 12 111 24352 121.96 1000 970 191.7
C 0 10 624615 2640.36 1023 1033 236.2
C 15 214 386805 1633.43 1023 1033 236.2
C 9 187 216175 910.95 1023 1033 236.2
D 1 52 476105 1921.34 1020 990 247.3
D 8 195 311565 1255.95 1020 990 247.3
D 2 250 155214 623.67 1020 990 247.3

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