ASTROSAT CZTI

Data Quality Report

Orbit 25056

Creation date: 2024-06-27T19:13:18.107826
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/AS1T03_206T01_9000003672_25056cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25056cztM0_level2_quad_clean.evt
Size (bytes)490,219,20084,185,280
Size467.5 MB 80.3 MB
Events in quadrant A3,232,041548,261
Events in quadrant B3,492,767565,806
Events in quadrant C3,292,286520,239
Events in quadrant D4,409,068482,446

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131722
B0139972
C0133602
D0171352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6194420.678076%
B6194991.598321%
C6194911.469164%
D61942984.811108%

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 7584 6195 0 0 0.00% 0.00%
B 7584 6195 26 26 0.34% 0.42%
C 7584 6195 0 0 0.00% 0.00%
D 7584 6195 269 269 3.55% 4.34%

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 13 254 10579 58.59 837 820 166.6
A 0 226 7422 39.64 837 820 166.6
A 3 137 6918 36.61 837 820 166.6
B 4 80 108028 680.6 844 826 157.5
B 5 172 21780 133.03 844 826 157.5
B 0 190 20314 123.72 844 826 157.5
C 14 238 129091 693.41 797 803 185.0
C 3 233 39940 211.54 797 803 185.0
C 7 247 11917 60.07 797 803 185.0
D 1 52 1018100 5328.02 782 759 190.9
D 8 195 286956 1498.87 782 759 190.9
D 1 3 43450 223.58 782 759 190.9

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