ASTROSAT CZTI

Data Quality Report

Orbit 20375

Creation date: 2024-06-27T18:14:35.137296
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_205T01_9000003012_20375cztM0_level2.evt modeM0/AS1A05_205T01_9000003012_20375cztM0_level2_quad_clean.evt
Size (bytes)510,730,56099,489,600
Size487.1 MB 94.9 MB
Events in quadrant A3,218,558655,686
Events in quadrant B3,715,907654,536
Events in quadrant C3,191,426625,976
Events in quadrant D4,883,043605,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140332
B0155672
C0139122
D0190032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6755530.784604%
B67551071.584012%
C6755670.991858%
D67551672.472243%

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 7775 6755 2 2 0.03% 0.03%
B 7775 6755 27 27 0.35% 0.40%
C 7775 6756 0 0 0.00% 0.00%
D 7775 6756 213 213 2.74% 3.15%

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 5 16 10007 54.87 832 816 167.5
A 0 226 7464 39.69 832 816 167.5
A 13 254 6825 35.87 832 816 167.5
B 7 220 222765 1391.2 827 806 159.5
B 0 197 69277 429.16 827 806 159.5
B 0 190 44359 272.98 827 806 159.5
C 14 238 123654 668.95 785 790 183.7
C 3 233 6192 29.41 785 790 183.7
C 13 61 5537 25.85 785 790 183.7
D 1 52 1624650 8296.19 795 771 195.7
D 13 153 130036 660.4 795 771 195.7
D 2 234 32116 160.14 795 771 195.7

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