ASTROSAT CZTI

Data Quality Report

Orbit 58275

Creation date: 2026-07-06T06:13:19.311138
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_044T03_9000006588_58275cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58275cztM0_level2_quad_clean.evt
Size (bytes)417,772,80099,201,600
Size398.4 MB 94.6 MB
Events in quadrant A4,215,777633,243
Events in quadrant B3,658,628683,237
Events in quadrant C3,012,299625,293
Events in quadrant D4,038,588579,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173912
B0158614
C0143912
D0169372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69331922.769364%
B69321452.091748%
C6932270.389498%
D69321271.832083%

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 7783 6934 136 136 1.75% 1.96%
B 7782 6933 53 53 0.68% 0.76%
C 7782 6933 15 15 0.19% 0.22%
D 7782 6933 118 118 1.52% 1.70%

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 4 249 912042 5130.18 723 704 177.6
A 12 114 293413 1647.74 723 704 177.6
A 4 238 52753 293.0 723 704 177.6
B 3 238 154983 998.1 723 694 154.6
B 0 153 120940 777.87 723 694 154.6
B 0 156 116882 751.62 723 694 154.6
C 6 223 64380 319.9 717 709 199.0
C 12 249 58556 290.64 717 709 199.0
C 5 63 22356 108.76 717 709 199.0
D 12 110 388086 1914.73 709 677 202.3
D 2 249 238587 1175.85 709 677 202.3
D 8 160 159510 785.02 709 677 202.3

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