ASTROSAT CZTI

Data Quality Report

Orbit 19571

Creation date: 2024-06-27T18:04:20.313057
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/AS1T03_005T01_9000002908_19571cztM0_level2.evt modeM0/AS1T03_005T01_9000002908_19571cztM0_level2_quad_clean.evt
Size (bytes)553,429,44076,314,240
Size527.8 MB 72.8 MB
Events in quadrant A3,376,166507,475
Events in quadrant B3,419,543512,714
Events in quadrant C3,348,510480,256
Events in quadrant D6,173,541354,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138222
B0139542
C0137352
D0224172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65241221.870018%
B65241442.207235%
C65241412.161251%
D6523125819.285605%

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 7619 6524 0 0 0.00% 0.00%
B 7619 6524 4 4 0.05% 0.06%
C 7619 6524 1 1 0.01% 0.02%
D 7618 6523 1124 1124 14.75% 17.23%

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 11 29 21648 119.29 868 852 174.3
A 13 254 8508 43.92 868 852 174.3
A 0 226 7583 38.61 868 852 174.3
B 3 64 31545 187.84 858 839 163.5
B 12 111 19520 114.28 858 839 163.5
B 11 111 17346 100.98 858 839 163.5
C 14 238 127946 672.18 813 820 189.1
C 3 233 24112 123.16 813 820 189.1
C 9 221 21790 110.88 813 820 189.1
D 13 104 2779252 15364.88 732 709 180.8
D 7 238 341059 1882.08 732 709 180.8
D 12 218 151124 831.77 732 709 180.8

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