ASTROSAT CZTI

Data Quality Report

Orbit 34640

Creation date: 2022-02-23T16:16:15.991884
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/AS1T05_008T01_9000004956_34640cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34640cztM0_level2_quad_clean.evt
Size (bytes)433,272,96053,023,680
Size413.2 MB 50.6 MB
Events in quadrant A2,503,485330,882
Events in quadrant B3,570,588313,375
Events in quadrant C3,013,336315,008
Events in quadrant D3,707,208307,408

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100803
B0135222
C0116582
D0142152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A482380.165872%
B48233517.277628%
C4823982.031930%
D4823611.264773%

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 6975 4824 3 3 0.04% 0.06%
B 6975 4824 242 242 3.47% 5.02%
C 6975 4824 72 72 1.03% 1.49%
D 6975 4824 47 47 0.67% 0.97%

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 83 45290 358.97 624 613 124.5
A 15 174 19961 155.46 624 613 124.5
A 9 143 12778 97.74 624 613 124.5
B 5 172 1106905 9906.29 592 580 111.7
B 4 141 35142 309.48 592 580 111.7
B 4 173 25507 223.2 592 580 111.7
C 0 10 258780 1908.07 587 590 135.3
C 15 214 204010 1503.31 587 590 135.3
C 3 233 161851 1191.75 587 590 135.3
D 8 195 969190 6560.93 600 583 147.6
D 10 199 58216 390.38 600 583 147.6
D 2 250 51867 347.38 600 583 147.6

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