ASTROSAT CZTI

Data Quality Report

Orbit 13502

Creation date: 2024-06-27T16:41:45.234473
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/AS1A04_103T01_9000001988_13502cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13502cztM0_level2_quad_clean.evt
Size (bytes)589,368,96074,761,920
Size562.1 MB 71.3 MB
Events in quadrant A3,285,347466,310
Events in quadrant B6,999,045443,222
Events in quadrant C3,393,504466,461
Events in quadrant D3,739,093442,140

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136843
B0250752
C0141532
D0152352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6382630.987151%
B6382107616.859919%
C6382861.347540%
D63821161.817612%

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 7558 6383 1 1 0.01% 0.02%
B 7558 6383 812 812 10.74% 12.72%
C 7558 6383 22 22 0.29% 0.34%
D 7558 6383 55 55 0.73% 0.86%

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 14 238 38025 223.61 825 809 166.4
A 1 162 32282 189.1 825 809 166.4
A 8 15 21550 124.62 825 809 166.4
B 3 64 3794175 25825.97 790 771 146.9
B 10 245 64145 431.45 790 771 146.9
B 4 142 19450 127.17 790 771 146.9
C 14 220 135682 730.21 809 816 184.7
C 3 233 90197 483.94 809 816 184.7
C 6 253 9539 47.23 809 816 184.7
D 8 195 381677 1994.64 800 779 191.0
D 11 129 147627 769.0 800 779 191.0
D 12 110 63451 328.19 800 779 191.0

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