ASTROSAT CZTI

Data Quality Report

Orbit 53951

Creation date: 2025-09-18T08:12:26.681150
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/AS1A14_057T04_9000006508_53951cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53951cztM0_level2_quad_clean.evt
Size (bytes)779,302,08078,105,600
Size743.2 MB 74.5 MB
Events in quadrant A3,303,154640,878
Events in quadrant B3,729,344672,091
Events in quadrant C7,306,667496,092
Events in quadrant D14,000,391100,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144301
B0157982
C0261871
D0460631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534671.025406%
B65331973.015460%
C6533137621.062299%
D6533552384.540028%

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 7679 6535 48 48 0.63% 0.73%
B 7678 6534 84 84 1.09% 1.29%
C 7678 6534 1234 1234 16.07% 18.89%
D 7677 6530 3994 3994 52.03% 61.16%

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 12 115 174593 994.84 708 691 174.8
A 15 174 135314 770.14 708 691 174.8
A 3 14 35769 200.67 708 691 174.8
B 0 213 536533 3533.9 700 676 151.6
B 0 155 174863 1148.74 700 676 151.6
B 5 185 73416 479.71 700 676 151.6
C 1 241 2523101 14580.86 627 622 173.0
C 13 3 1497228 8650.94 627 622 173.0
C 9 38 386819 2232.36 627 622 173.0
D 8 176 11926902 166061.41 243 231 71.8
D 10 172 256705 3571.02 243 231 71.8
D 6 239 207707 2888.8 243 231 71.8

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