ASTROSAT CZTI

Data Quality Report

Orbit 54520

Creation date: 2025-10-26T14:22:18.820790
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_127T09_9000006520_54520cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54520cztM0_level2_quad_clean.evt
Size (bytes)527,328,000114,580,800
Size502.9 MB 109.3 MB
Events in quadrant A3,887,007770,508
Events in quadrant B5,183,440764,345
Events in quadrant C5,815,813681,786
Events in quadrant D4,001,329687,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176311
B0214811
C0234291
D0181741

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81321111.364978%
B81327068.681751%
C81326828.386621%
D8133901.106603%

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 8687 8133 33 33 0.38% 0.41%
B 8687 8133 345 345 3.97% 4.24%
C 8687 8132 471 471 5.42% 5.79%
D 8688 8134 52 52 0.60% 0.64%

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 3 120670 535.44 909 886 223.7
A 4 3 83561 369.56 909 886 223.7
A 0 8 36633 159.79 909 886 223.7
B 5 185 1496401 7902.87 865 832 189.2
B 10 247 88164 461.48 865 832 189.2
B 0 213 83189 435.19 865 832 189.2
C 4 5 2000002 8586.45 849 841 232.8
C 9 38 183933 786.38 849 841 232.8
C 14 254 70700 300.05 849 841 232.8
D 7 70 187091 754.3 875 838 246.9
D 2 120 154118 620.76 875 838 246.9
D 5 173 56283 224.54 875 838 246.9

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