ASTROSAT CZTI

Data Quality Report

Orbit 35397

Creation date: 2022-04-16T12:48:29.756484
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/AS1A11_099T01_9000005068_35397cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35397cztM0_level2_quad_clean.evt
Size (bytes)955,255,68070,680,960
Size911.0 MB 67.4 MB
Events in quadrant A2,916,125551,327
Events in quadrant B14,025,135212,404
Events in quadrant C3,530,416533,514
Events in quadrant D8,058,746425,724

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123933
B0456492
C0140022
D0279482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5931170.286630%
B5931551893.036587%
C59312063.473276%
D5931178630.112966%

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 7274 5932 9 9 0.12% 0.15%
B 7274 5932 4907 4907 67.46% 82.72%
C 7274 5932 169 169 2.32% 2.85%
D 7274 5932 1581 1581 21.73% 26.65%

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 131936 929.01 693 680 141.3
A 15 174 25715 177.19 693 680 141.3
A 13 6 19534 133.45 693 680 141.3
B 4 251 4316292 63825.31 339 330 67.6
B 5 14 2703699 39977.96 339 330 67.6
B 5 31 2596412 38391.38 339 330 67.6
C 0 207 376495 2435.76 662 667 154.3
C 0 10 296726 1918.77 662 667 154.3
C 15 214 243406 1573.2 662 667 154.3
D 7 80 2919795 19383.22 599 580 150.6
D 1 52 1356715 9004.56 599 580 150.6
D 13 249 339242 2248.67 599 580 150.6

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