ASTROSAT CZTI

Data Quality Report

Orbit 53485

Creation date: 2025-08-17T22:11:53.028904
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_002T07_9000006498_53485cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53485cztM0_level2_quad_clean.evt
Size (bytes)875,710,08083,848,320
Size835.1 MB 80.0 MB
Events in quadrant A6,623,536659,891
Events in quadrant B4,426,250740,866
Events in quadrant C16,375,04267,229
Events in quadrant D4,479,632610,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243392
B0174092
C0532762
D0178802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A660172410.968035%
B66013294.984093%
C6600602191.227273%
D66002473.742424%

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 7786 6601 522 522 6.70% 7.91%
B 7786 6601 179 179 2.30% 2.71%
C 7784 6599 5983 5983 76.86% 90.67%
D 7785 6600 157 157 2.02% 2.38%

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 3 63 2020895 11009.42 752 733 183.5
A 15 174 666145 3626.34 752 733 183.5
A 3 62 569554 3099.94 752 733 183.5
B 0 213 437101 2704.51 761 737 161.3
B 2 249 401354 2482.96 761 737 161.3
B 15 20 148942 918.55 761 737 161.3
C 7 64 13050946 157880.4 297 294 82.7
C 15 224 1091333 13198.86 297 294 82.7
C 1 241 485782 5873.2 297 294 82.7
D 11 245 752666 3564.39 749 715 211.0
D 12 35 200639 947.68 749 715 211.0
D 2 249 147715 696.81 749 715 211.0

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