ASTROSAT CZTI

Data Quality Report

Orbit 36120

Creation date: 2024-06-27T21:22:36.191112
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_36120cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36120cztM0_level2_quad_clean.evt
Size (bytes)515,211,84068,333,760
Size491.3 MB 65.2 MB
Events in quadrant A2,681,803442,422
Events in quadrant B4,763,768404,665
Events in quadrant C3,663,150424,942
Events in quadrant D4,118,640409,008

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114373
B0177082
C0142862
D0159242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A553780.144483%
B553775613.653603%
C55372404.334477%
D55373456.230811%

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 7090 5538 3 3 0.04% 0.05%
B 7090 5538 559 559 7.88% 10.09%
C 7090 5538 190 190 2.68% 3.43%
D 7090 5538 317 317 4.47% 5.72%

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 182936 1416.58 635 622 128.7
A 9 143 28301 215.06 635 622 128.7
A 13 254 8328 59.87 635 622 128.7
B 5 172 2128189 18562.05 592 576 114.6
B 5 236 109487 950.18 592 576 114.6
B 0 190 45634 393.1 592 576 114.6
C 12 249 685563 4858.39 604 607 141.0
C 15 214 233675 1653.15 604 607 141.0
C 0 10 210943 1491.91 604 607 141.0
D 1 52 956575 6495.73 594 577 147.2
D 12 6 311722 2114.14 594 577 147.2
D 12 233 136356 922.58 594 577 147.2

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