ASTROSAT CZTI

Data Quality Report

Orbit 11956

Creation date: 2024-06-27T16:20:31.501206
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_124T01_9000001766_11956cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11956cztM0_level2_quad_clean.evt
Size (bytes)466,191,360123,488,640
Size444.6 MB 117.8 MB
Events in quadrant A3,251,835832,951
Events in quadrant B3,758,557841,840
Events in quadrant C2,886,539842,628
Events in quadrant D3,800,298789,526

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138763
B0154182
C0129042
D0156162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6206570.918466%
B62062834.560103%
C6206360.580084%
D62061211.949726%

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 7507 6208 3 3 0.04% 0.05%
B 7507 6208 161 161 2.14% 2.59%
C 7507 6208 0 0 0.00% 0.00%
D 7507 6207 52 52 0.69% 0.84%

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 1 162 119838 795.29 740 722 149.8
A 1 178 58772 387.57 740 722 149.8
A 1 161 51801 341.03 740 722 149.8
B 4 239 517339 3776.51 736 719 136.8
B 15 204 192728 1403.59 736 719 136.8
B 10 244 89311 647.61 736 719 136.8
C 1 16 12393 70.0 733 737 166.5
C 14 234 7326 39.57 733 737 166.5
C 13 61 5441 28.25 733 737 166.5
D 1 52 452613 2659.96 718 697 169.9
D 13 249 122944 719.54 718 697 169.9
D 13 122 119859 701.38 718 697 169.9

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