ASTROSAT CZTI

Data Quality Report

Orbit 39645

Creation date: 2024-06-27T22:07:15.311673
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/AS1A12_018T01_9000005488_39645cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39645cztM0_level2_quad_clean.evt
Size (bytes)413,953,92090,362,880
Size394.8 MB 86.2 MB
Events in quadrant A3,642,389619,884
Events in quadrant B2,762,272629,969
Events in quadrant C4,337,210582,806
Events in quadrant D4,157,752522,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143093
B0120292
C0164962
D0160902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5452681.247249%
B5452681.247249%
C54522103.851798%
D54524408.070433%

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 7154 5453 48 48 0.67% 0.88%
B 7154 5453 47 47 0.66% 0.86%
C 7154 5453 180 180 2.52% 3.30%
D 7154 5453 379 379 5.30% 6.95%

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 15 222 807845 6589.57 600 587 122.5
A 10 83 451290 3679.04 600 587 122.5
A 13 248 26941 215.13 600 587 122.5
B 5 172 360440 3148.32 592 574 114.3
B 5 255 29962 257.1 592 574 114.3
B 4 170 15529 130.83 592 574 114.3
C 9 187 1102703 8189.01 577 580 134.6
C 15 208 445702 3307.35 577 580 134.6
C 3 233 300436 2228.0 577 580 134.6
D 12 227 844439 6049.02 568 551 139.5
D 13 249 495399 3547.09 568 551 139.5
D 2 250 205737 1470.78 568 551 139.5

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