ASTROSAT CZTI

Data Quality Report

Orbit 57723

Creation date: 2026-05-30T04:35:41.522280
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_125T09_9000006578_57723cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57723cztM0_level2_quad_clean.evt
Size (bytes)2,254,559,040409,688,640
Size2.1 GB 390.7 MB
Events in quadrant A14,929,4972,765,434
Events in quadrant B14,348,9682,935,458
Events in quadrant C36,135,6482,220,226
Events in quadrant D15,800,5712,488,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05840
B05840
C05840
D05840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0653704
B0635734
C01275827
D0674274

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A290214711.622963%
B290225181.784853%
C29021617121.263912%
D290214321.488577%

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 31461 29026 86 86 0.27% 0.30%
B 31462 29026 215 215 0.68% 0.74%
C 31461 29024 5180 5180 16.46% 17.85%
D 31461 29026 310 310 0.99% 1.07%

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 11 31 2307246 3006.65 3119 3037 766.4
A 13 248 372155 481.64 3119 3037 766.4
A 3 128 73736 92.25 3119 3037 766.4
B 4 142 409053 619.07 3071 2954 656.0
B 0 213 254461 383.4 3071 2954 656.0
B 5 185 250981 378.1 3071 2954 656.0
C 15 224 15752553 21068.0 2777 2754 747.6
C 12 254 7737318 10346.28 2777 2754 747.6
C 14 254 796875 1062.27 2777 2754 747.6
D 8 160 793759 941.73 3004 2864 839.8
D 3 12 727974 863.4 3004 2864 839.8
D 8 240 367732 434.46 3004 2864 839.8

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