ASTROSAT CZTI

Data Quality Report

Orbit 37989

Creation date: 2024-06-27T21:47:02.704928
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_082T01_9000005356_37989cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37989cztM0_level2_quad_clean.evt
Size (bytes)489,306,24071,640,000
Size466.6 MB 68.3 MB
Events in quadrant A4,601,282443,924
Events in quadrant B3,665,914451,466
Events in quadrant C2,798,855453,347
Events in quadrant D3,357,211412,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178172
B0147191
C0119281
D0138641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58251222.094421%
B58251873.210300%
C582580.137339%
D5825741.270386%

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 7138 5826 90 90 1.26% 1.54%
B 7138 5826 107 107 1.50% 1.84%
C 7138 5826 3 3 0.04% 0.05%
D 7138 5826 76 76 1.06% 1.30%

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 12 16 762187 5698.86 654 641 133.6
A 15 222 754962 5644.79 654 641 133.6
A 10 83 379679 2836.44 654 641 133.6
B 5 172 267810 2126.74 654 638 125.6
B 0 186 247531 1965.32 654 638 125.6
B 5 184 198200 1572.63 654 638 125.6
C 15 214 249002 1637.55 643 646 151.7
C 0 10 15040 94.91 643 646 151.7
C 14 254 14137 88.95 643 646 151.7
D 12 233 344111 2200.51 639 622 156.1
D 7 223 111392 709.63 639 622 156.1
D 2 250 110211 702.07 639 622 156.1

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