ASTROSAT CZTI

Data Quality Report

Orbit 58500

Creation date: 2026-07-21T09:16:24.587905
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_044T04_9000006592_58500cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58500cztM0_level2_quad_clean.evt
Size (bytes)376,712,64099,437,760
Size359.3 MB 94.8 MB
Events in quadrant A3,504,212647,404
Events in quadrant B3,461,971696,465
Events in quadrant C3,285,590624,749
Events in quadrant D3,178,410581,534

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149192
B0146332
C0143752
D0142652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609711.074293%
B66101201.815431%
C6610240.363086%
D6610440.665658%

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 8884 6611 26 26 0.29% 0.39%
B 8885 6612 25 25 0.28% 0.38%
C 8885 6612 8 8 0.09% 0.12%
D 8885 6612 14 14 0.16% 0.21%

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 12 114 202875 1104.39 739 720 183.0
A 10 17 158655 862.81 739 720 183.0
A 10 143 153969 837.21 739 720 183.0
B 0 186 173516 1096.67 735 709 157.6
B 4 171 70005 439.77 735 709 157.6
B 2 249 66550 417.84 735 709 157.6
C 12 252 330126 1640.94 720 712 200.7
C 9 237 38156 186.52 720 712 200.7
C 6 223 27748 134.68 720 712 200.7
D 3 12 130270 641.56 709 675 202.0
D 2 31 94072 462.36 709 675 202.0
D 5 38 75898 372.39 709 675 202.0

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