ASTROSAT CZTI

Data Quality Report

Orbit 50120

Creation date: 2025-01-03T08:02:37.780469
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/AS1C09_003T01_9000006442_50120cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50120cztM0_level2_quad_clean.evt
Size (bytes)1,434,712,32067,469,760
Size1.3 GB 64.3 MB
Events in quadrant A16,586,359195,102
Events in quadrant B5,271,320729,208
Events in quadrant C15,523,457219,338
Events in quadrant D15,136,615363,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0545226
B0210190
C0513420
D0502740

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7688572974.518730%
B76883955.137877%
C7688544170.772633%
D7688372348.426119%

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 7688 7688 5224 5224 67.95% 67.95%
B 7688 7688 283 283 3.68% 3.68%
C 7688 7688 4283 4283 55.71% 55.71%
D 7688 7688 4119 4119 53.58% 53.58%

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 6 250 7095294 58696.66 474 463 120.9
A 4 13 2307946 19090.17 474 463 120.9
A 8 8 2203107 18222.82 474 463 120.9
B 2 176 1068543 6636.59 760 736 160.9
B 5 185 268028 1661.26 760 736 160.9
B 1 255 198200 1227.27 760 736 160.9
C 4 111 9360822 75904.78 426 423 123.3
C 15 230 845302 6851.24 426 423 123.3
C 13 250 623167 5049.92 426 423 123.3
D 15 168 4018604 21195.92 633 607 189.6
D 15 106 2446713 12903.81 633 607 189.6
D 12 191 773428 4076.82 633 607 189.6

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