ASTROSAT CZTI

Data Quality Report

Orbit 42419

Creation date: 2024-06-27T22:40:02.052978
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/AS1T05_138T01_9000005802_42419cztM0_level2.fits modeM0/AS1T05_138T01_9000005802_42419cztM0_level2_quad_clean.evt
Size (bytes)169,064,64044,884,800
Size161.2 MB 42.8 MB
Events in quadrant A1,369,256305,781
Events in quadrant B1,195,255313,223
Events in quadrant C1,213,134301,686
Events in quadrant D2,283,222258,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054710
B052650
C052130
D084660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2507140.558436%
B250720.079777%
C250880.318979%
D25082359.370016%

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 2507 2507 8 8 0.32% 0.32%
B 2507 2507 0 0 0.00% 0.00%
C 2508 2508 8 8 0.32% 0.32%
D 2508 2508 240 240 9.57% 9.57%

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 198986 3325.91 285 281 59.7
A 7 3 47049 782.8 285 281 59.7
A 13 6 10518 171.35 285 281 59.7
B 15 36 26542 483.87 280 274 54.3
B 0 245 25332 461.58 280 274 54.3
B 5 255 22167 403.28 280 274 54.3
C 15 214 99930 1556.93 271 273 64.0
C 3 110 41758 648.12 271 273 64.0
C 14 254 4973 73.43 271 273 64.0
D 12 33 368024 5568.52 268 261 66.0
D 2 16 366222 5541.24 268 261 66.0
D 12 233 232408 3515.08 268 261 66.0

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