ASTROSAT CZTI

Data Quality Report

Orbit 34924

Creation date: 2022-03-14T22:02:48.124527
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/AS1A11_086T01_9000005002_34924cztM0_level2.evt modeM0/AS1A11_086T01_9000005002_34924cztM0_level2_quad_clean.evt
Size (bytes)487,984,32085,213,440
Size465.4 MB 81.3 MB
Events in quadrant A2,572,252575,715
Events in quadrant B3,924,951560,936
Events in quadrant C2,913,981565,777
Events in quadrant D4,998,749497,398

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112243
B0151622
C0118572
D0186922

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A543560.110396%
B54354027.396504%
C54351092.005520%
D54355279.696412%

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 7079 5436 1 1 0.01% 0.02%
B 7079 5436 315 315 4.45% 5.79%
C 7079 5436 83 83 1.17% 1.53%
D 7079 5436 475 475 6.71% 8.74%

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 63086 488.21 636 624 127.9
A 15 169 22180 168.49 636 624 127.9
A 7 16 14140 105.64 636 624 127.9
B 5 172 1316502 10993.37 612 595 119.7
B 0 190 155695 1295.74 612 595 119.7
B 4 232 31057 254.49 612 595 119.7
C 0 10 261152 1836.49 613 618 141.9
C 15 214 227828 1601.59 613 618 141.9
C 14 67 15508 104.96 613 618 141.9
D 7 38 1188404 8414.25 584 570 141.2
D 8 195 702678 4973.51 584 570 141.2
D 2 31 467509 3307.65 584 570 141.2

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