ASTROSAT CZTI

Data Quality Report

Orbit 54283

Creation date: 2025-10-10T15:13:09.347912
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_126T15_9000006516_54283cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54283cztM0_level2_quad_clean.evt
Size (bytes)483,243,84090,601,920
Size460.9 MB 86.4 MB
Events in quadrant A3,159,305622,085
Events in quadrant B3,724,891673,450
Events in quadrant C3,276,793582,553
Events in quadrant D7,241,762429,439

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138892
B0153201
C0145254
D0257962

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62401221.955128%
B6240450.721154%
C62401332.131410%
D6241159625.572825%

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 7401 6242 96 96 1.30% 1.54%
B 7401 6242 11 11 0.15% 0.18%
C 7401 6242 143 143 1.93% 2.29%
D 7401 6241 1497 1497 20.23% 23.99%

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 7 29 386176 2325.54 664 648 165.8
A 11 3 47773 284.26 664 648 165.8
A 4 3 36426 215.82 664 648 165.8
B 7 0 914185 6481.89 656 633 140.9
B 5 185 66197 465.19 656 633 140.9
B 0 213 43142 301.61 656 633 140.9
C 12 2 266029 1511.77 632 626 175.6
C 12 249 156225 886.31 632 626 175.6
C 12 252 134971 765.25 632 626 175.6
D 8 176 3220121 20162.24 555 529 159.7
D 6 239 765347 4789.56 555 529 159.7
D 11 176 335019 2094.7 555 529 159.7

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