ASTROSAT CZTI

Data Quality Report

Orbit 39233

Creation date: 2024-06-27T22:02:04.670287
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_054T04_9000005446_39233cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39233cztM0_level2_quad_clean.evt
Size (bytes)623,105,28086,077,440
Size594.2 MB 82.1 MB
Events in quadrant A3,503,078729,184
Events in quadrant B2,732,889686,360
Events in quadrant C3,176,528671,251
Events in quadrant D13,222,716133,227

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139013
B0119442
C0129612
D0430682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55291212.188461%
B5529360.651112%
C5529160.289383%
D5529480586.905408%

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 7142 5530 83 83 1.16% 1.50%
B 7142 5530 23 23 0.32% 0.42%
C 7142 5530 14 14 0.20% 0.25%
D 7141 5528 3642 3642 51.00% 65.88%

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 13 248 567319 4327.8 640 629 130.9
A 10 83 454760 3468.19 640 629 130.9
A 13 254 7522 52.64 640 629 130.9
B 5 172 175446 1450.92 619 603 120.5
B 5 255 44597 365.08 619 603 120.5
B 0 230 32117 261.52 619 603 120.5
C 14 254 424715 2915.75 615 619 145.5
C 15 214 233113 1598.45 615 619 145.5
C 3 233 71217 485.38 615 619 145.5
D 12 235 10980154 123938.4 350 339 88.6
D 1 47 208927 2354.51 350 339 88.6
D 12 227 178768 2014.08 350 339 88.6

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