ASTROSAT CZTI

Data Quality Report

Orbit 17487

Creation date: 2024-06-27T17:37:04.614939
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_149T03_9000002590_17487cztM0_level2.evt modeM0/AS1A05_149T03_9000002590_17487cztM0_level2_quad_clean.evt
Size (bytes)564,327,36085,406,400
Size538.2 MB 81.4 MB
Events in quadrant A3,423,597548,577
Events in quadrant B3,522,784550,144
Events in quadrant C3,462,554530,362
Events in quadrant D6,223,212485,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143152
B0145822
C0141362
D0229302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67671331.965420%
B67671121.655091%
C67671382.039308%
D676783612.354071%

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 7837 6768 15 15 0.19% 0.22%
B 7837 6767 3 3 0.04% 0.04%
C 7837 6768 0 0 0.00% 0.00%
D 7837 6767 630 630 8.04% 9.31%

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 15 174 81366 467.37 866 849 172.3
A 0 226 7766 40.15 866 849 172.3
A 12 194 6463 32.59 866 849 172.3
B 7 220 40813 248.02 859 840 161.2
B 4 142 20516 122.08 859 840 161.2
B 0 197 19450 115.47 859 840 161.2
C 14 238 128824 675.04 828 834 189.6
C 5 218 72660 378.82 828 834 189.6
C 5 219 19445 98.16 828 834 189.6
D 13 189 1567148 7404.73 803 788 211.5
D 1 52 749779 3540.74 803 788 211.5
D 11 176 419927 1981.42 803 788 211.5

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