ASTROSAT CZTI

Data Quality Report

Orbit 21323

Creation date: 2024-06-27T18:26:23.092267
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_037T01_9000003144_21323cztM0_level2.evt modeM0/AS1A05_037T01_9000003144_21323cztM0_level2_quad_clean.evt
Size (bytes)482,558,40096,912,000
Size460.2 MB 92.4 MB
Events in quadrant A3,434,314631,551
Events in quadrant B3,427,954640,788
Events in quadrant C3,266,265611,323
Events in quadrant D4,040,533593,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143632
B0143042
C0138582
D0164052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556801.220256%
B6557841.281074%
C6557961.464084%
D65571211.845356%

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 7646 6556 4 4 0.05% 0.06%
B 7647 6557 3 3 0.04% 0.05%
C 7647 6557 0 0 0.00% 0.00%
D 7647 6557 68 68 0.89% 1.04%

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 10 253 99146 572.59 850 835 171.7
A 9 143 24096 135.48 850 835 171.7
A 12 96 12098 65.6 850 835 171.7
B 3 64 39737 243.59 842 824 159.7
B 0 190 34391 210.13 842 824 159.7
B 0 230 22498 135.68 842 824 159.7
C 14 238 127936 679.06 801 808 187.2
C 0 10 10832 53.54 801 808 187.2
C 13 61 5705 26.16 801 808 187.2
D 12 235 270629 1378.74 815 795 195.7
D 7 38 182573 928.81 815 795 195.7
D 13 153 120384 611.05 815 795 195.7

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