ASTROSAT CZTI

Data Quality Report

Orbit 19321

Creation date: 2024-06-27T18:01:22.075134
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/AS1A05_204T01_9000002856_19321cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19321cztM0_level2_quad_clean.evt
Size (bytes)538,660,80096,765,120
Size513.7 MB 92.3 MB
Events in quadrant A3,441,722640,241
Events in quadrant B3,544,238643,411
Events in quadrant C3,393,461608,714
Events in quadrant D5,491,449583,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144772
B0147892
C0141932
D0208172

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6524941.440834%
B65241041.594114%
C65241221.870018%
D652479412.170448%

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 7724 6524 2 2 0.03% 0.03%
B 7724 6524 10 10 0.13% 0.15%
C 7724 6524 0 0 0.00% 0.00%
D 7724 6524 638 638 8.26% 9.78%

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 14917 80.26 884 867 175.1
A 13 254 8094 41.28 884 867 175.1
A 0 226 7903 40.19 884 867 175.1
B 0 190 84850 519.59 864 844 161.7
B 0 230 27568 165.29 864 844 161.7
B 0 229 24031 143.42 864 844 161.7
C 14 238 132395 685.21 828 834 192.0
C 3 233 31571 160.09 828 834 192.0
C 13 61 5827 26.01 828 834 192.0
D 7 238 1287802 6646.74 806 782 193.6
D 1 52 799496 4124.91 806 782 193.6
D 11 176 293278 1510.58 806 782 193.6

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