ASTROSAT CZTI

Data Quality Report

Orbit 08258

Creation date: 2024-06-27T15:30:12.981869
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/AS1G07_086T02_9000001144_08258cztM0_level2.evt modeM0/AS1G07_086T02_9000001144_08258cztM0_level2_quad_clean.evt
Size (bytes)33,658,5603,988,800
Size32.1 MB 3.8 MB
Events in quadrant A522,8324,321
Events in quadrant B163,26930,880
Events in quadrant C158,41431,605
Events in quadrant D156,59329,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017031
B06470
C06310
D06210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21621599.537037%
B2165826.851852%
C216156.944444%
D216156.944444%

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 410 215 198 198 48.29% 92.09%
B 411 217 0 0 0.00% 0.00%
C 411 217 0 0 0.00% 0.00%
D 411 217 1 1 0.24% 0.46%

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 0 128 486142 136515.27 8 8 3.6
A 12 194 80 20.22 8 8 3.6
A 0 226 79 19.94 8 8 3.6
B 0 214 1601 139.58 41 39 11.2
B 12 111 1054 90.7 41 39 11.2
B 11 111 783 66.49 41 39 11.2
C 7 159 452 35.06 40 40 11.8
C 13 61 296 21.78 40 40 11.8
C 8 112 112 6.13 40 40 11.8
D 7 55 3649 293.74 40 38 12.3
D 2 234 619 47.26 40 38 12.3
D 1 52 449 33.43 40 38 12.3

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