ASTROSAT CZTI

Data Quality Report

Orbit 40140

Creation date: 2024-06-27T22:12:47.528939
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_004T01_9000005520_40140cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40140cztM0_level2_quad_clean.evt
Size (bytes)586,883,52072,817,920
Size559.7 MB 69.4 MB
Events in quadrant A3,222,083602,143
Events in quadrant B2,836,747618,236
Events in quadrant C12,487,67072,318
Events in quadrant D2,780,995555,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129663
B0119552
C0406012
D0118682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50971322.589759%
B50971643.217579%
C5097462090.641554%
D5097621.216402%

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 7010 5098 117 117 1.67% 2.30%
B 7010 5098 118 118 1.68% 2.31%
C 7009 5096 4612 4612 65.80% 90.50%
D 7010 5098 59 59 0.84% 1.16%

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 435389 3687.67 577 567 117.9
A 13 248 372517 3154.46 577 567 117.9
A 12 189 97363 820.92 577 567 117.9
B 5 172 265127 2380.88 576 559 111.1
B 4 171 131469 1178.07 576 559 111.1
B 0 186 86584 774.15 576 559 111.1
C 9 187 11183657 167496.29 284 285 66.8
C 15 214 111275 1662.32 284 285 66.8
C 0 10 56781 846.15 284 285 66.8
D 13 249 254866 1808.78 572 558 140.6
D 1 52 83814 592.16 572 558 140.6
D 2 250 57525 405.18 572 558 140.6

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