ASTROSAT CZTI

Data Quality Report

Orbit 31948

Creation date: 2024-06-27T20:34:27.983469
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/AS1C06_002T04_9000004660_31948cztM0_level2.evt modeM0/AS1C06_002T04_9000004660_31948cztM0_level2_quad_clean.evt
Size (bytes)2,556,175,680399,240,000
Size2.4 GB 380.7 MB
Events in quadrant A10,940,9212,947,998
Events in quadrant B28,212,8032,433,834
Events in quadrant C19,116,5732,592,712
Events in quadrant D17,728,3362,661,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451794
B0983454
C0710824
D0680544

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A211143211.520318%
B21114648730.723690%
C21115264412.521904%
D2111511555.470045%

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 26079 21114 0 0 0.00% 0.00%
B 26079 21114 5429 5429 20.82% 25.71%
C 26080 21115 777 777 2.98% 3.68%
D 26080 21115 933 933 3.58% 4.42%

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 12 96 155493 281.15 2788 2736 543.3
A 13 254 40687 69.85 2788 2736 543.3
A 13 6 37361 63.73 2788 2736 543.3
B 4 80 11326020 26138.65 2380 2326 433.2
B 6 159 5123283 11820.78 2380 2326 433.2
B 10 245 798519 1837.86 2380 2326 433.2
C 3 233 5896950 10356.16 2510 2525 569.2
C 0 10 2449506 4299.2 2510 2525 569.2
C 14 238 588378 1029.31 2510 2525 569.2
D 8 195 3121986 5085.13 2646 2588 613.4
D 12 33 2352249 3830.33 2646 2588 613.4
D 13 249 1189268 1934.48 2646 2588 613.4

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