ASTROSAT CZTI

Data Quality Report

Orbit 58588

Creation date: 2026-07-27T07:13:12.439481
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_58588cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58588cztM0_level2_quad_clean.evt
Size (bytes)504,345,60099,639,360
Size481.0 MB 95.0 MB
Events in quadrant A4,469,822653,476
Events in quadrant B6,072,610641,282
Events in quadrant C3,792,700628,869
Events in quadrant D3,768,283586,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183752
B0230062
C0165222
D0167272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72821391.908816%
B728284211.562757%
C72831101.510367%
D7283781.070987%

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 9233 7480 46 46 0.50% 0.61%
B 9233 7474 519 519 5.62% 6.94%
C 9234 7481 64 64 0.69% 0.86%
D 9234 7481 29 29 0.31% 0.39%

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 14 1019678 5042.57 815 795 202.1
A 15 233 100573 493.81 815 795 202.1
A 13 248 53732 261.99 815 795 202.1
B 5 172 1363375 8169.34 779 750 166.8
B 6 255 1025977 6146.54 779 750 166.8
B 0 171 123724 737.27 779 750 166.8
C 12 254 290871 1328.8 795 789 218.3
C 12 252 95408 433.43 795 789 218.3
C 2 12 87023 395.02 795 789 218.3
D 5 38 233518 1026.92 790 754 226.7
D 2 249 121704 533.61 790 754 226.7
D 2 120 91581 400.72 790 754 226.7

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