ASTROSAT CZTI

Data Quality Report

Orbit 05787

Creation date: 2024-06-27T14:59:08.028720
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/AS1A02_106T01_9000000744_05787cztM0_level2.evt modeM0/AS1A02_106T01_9000000744_05787cztM0_level2_quad_clean.evt
Size (bytes)410,273,28079,617,600
Size391.3 MB 75.9 MB
Events in quadrant A3,067,268492,013
Events in quadrant B3,054,430508,570
Events in quadrant C2,882,288494,664
Events in quadrant D2,987,128470,563

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01335911
B01331911
C0129646
D01353610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6377290.454759%
B6377270.423397%
C6379220.344882%
D6377410.642936%

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 7566 6382 1 1 0.01% 0.02%
B 7566 6382 1 1 0.01% 0.02%
C 7566 6382 0 0 0.00% 0.00%
D 7566 6382 25 25 0.33% 0.39%

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 79 128952 848.45 745 730 151.1
A 15 236 34727 224.96 745 730 151.1
A 8 15 17358 110.03 745 730 151.1
B 4 81 55648 378.09 761 743 145.2
B 15 204 36465 245.99 761 743 145.2
B 12 111 13361 86.89 761 743 145.2
C 8 128 14680 82.3 731 734 169.5
C 8 112 7398 39.32 731 734 169.5
C 13 61 5881 30.37 731 734 169.5
D 12 233 182520 1034.22 720 700 175.8
D 12 110 34297 191.1 720 700 175.8
D 2 14 22163 122.08 720 700 175.8

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