ASTROSAT CZTI

Data Quality Report

Orbit 39391

Creation date: 2024-06-27T22:04:00.517365
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_9000005470_39391cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39391cztM0_level2_quad_clean.evt
Size (bytes)952,096,320230,869,440
Size908.0 MB 220.2 MB
Events in quadrant A6,977,1211,595,055
Events in quadrant B6,348,9571,651,328
Events in quadrant C7,640,1491,506,719
Events in quadrant D13,235,4681,307,353

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288525
B0281934
C0313884
D0487664

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13463300.222833%
B13463580.430810%
C134631681.247865%
D13463139410.354304%

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 19739 13466 16 16 0.08% 0.12%
B 19739 13466 28 28 0.14% 0.21%
C 19739 13466 133 133 0.67% 0.99%
D 19739 13465 1226 1226 6.21% 9.11%

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 982982 3283.63 1505 1476 298.9
A 2 79 150083 497.16 1505 1476 298.9
A 13 254 21218 66.05 1505 1476 298.9
B 5 172 225421 791.43 1497 1459 283.0
B 5 255 145361 508.52 1497 1459 283.0
B 5 200 46959 160.79 1497 1459 283.0
C 9 187 780498 2389.64 1435 1443 326.0
C 15 214 603102 1845.5 1435 1443 326.0
C 14 254 417488 1276.16 1435 1443 326.0
D 12 235 6261644 18741.32 1385 1345 334.0
D 7 38 651875 1947.48 1385 1345 334.0
D 2 249 499576 1491.54 1385 1345 334.0

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