ASTROSAT CZTI

Data Quality Report

Orbit 53138

Creation date: 2025-07-28T18:21:47.047616
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/AS1A13_003T01_9000006486_53138cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_53138cztM0_level2_quad_clean.evt
Size (bytes)788,434,56068,374,080
Size751.9 MB 65.2 MB
Events in quadrant A15,464,5852,032
Events in quadrant B3,440,395615,175
Events in quadrant C5,683,244506,375
Events in quadrant D4,117,430515,393

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05011794
B0147717
C02115512
D01661418

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168615299.740597%
B61772193.545410%
C617663710.314119%
D61752333.773279%

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 7175 6168 6042 6042 84.21% 97.96%
B 7177 6182 126 126 1.76% 2.04%
C 7177 6182 583 583 8.12% 9.43%
D 7177 6181 235 235 3.27% 3.80%

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 9 191 14461835 306645.66 180 175 47.2
A 0 8 144987 3070.6 180 175 47.2
A 15 174 64092 1355.3 180 175 47.2
B 2 249 429130 3238.49 621 599 132.3
B 10 254 134616 1012.79 621 599 132.3
B 0 213 130416 981.05 621 599 132.3
C 0 240 1605496 9911.06 585 581 161.9
C 15 224 645895 3985.1 585 581 161.9
C 7 80 455817 2811.28 585 581 161.9
D 8 176 559103 3268.86 598 572 170.9
D 3 224 273845 1599.36 598 572 170.9
D 6 42 151102 880.99 598 572 170.9

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