ASTROSAT CZTI

Data Quality Report

Orbit 57289

Creation date: 2026-04-30T21:12:26.506757
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_049T03_9000006570_57289cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57289cztM0_level2_quad_clean.evt
Size (bytes)371,128,32087,572,160
Size353.9 MB 83.5 MB
Events in quadrant A2,901,022574,071
Events in quadrant B3,133,132612,713
Events in quadrant C4,368,049530,453
Events in quadrant D2,870,659517,311

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126221
B0135711
C0171611
D0129361

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5973490.820358%
B5974921.540007%
C59742854.770673%
D5974530.887178%

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 7008 5974 3 3 0.04% 0.05%
B 7009 5975 25 25 0.36% 0.42%
C 7009 5975 244 244 3.48% 4.08%
D 7009 5975 31 31 0.44% 0.52%

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 8 4 333972 2105.17 642 625 158.3
A 3 14 26015 160.34 642 625 158.3
A 7 64 17312 105.38 642 625 158.3
B 5 185 261930 1929.73 630 606 135.4
B 7 0 144920 1065.68 630 606 135.4
B 10 16 64467 471.58 630 606 135.4
C 15 224 1334621 8073.36 603 596 165.2
C 14 254 155264 936.03 603 596 165.2
C 6 223 118983 716.46 603 596 165.2
D 3 12 136584 775.96 617 589 175.3
D 2 249 47793 269.34 617 589 175.3
D 5 173 44597 251.1 617 589 175.3

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