ASTROSAT CZTI

Data Quality Report

Orbit 45158

Creation date: 2024-06-27T23:10:03.433159
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/AS1A13_049T04_9000006048_45158cztM0_level2.fits modeM0/AS1A13_049T04_9000006048_45158cztM0_level2_quad_clean.evt
Size (bytes)637,793,280108,365,760
Size608.2 MB 103.3 MB
Events in quadrant A9,732,878611,267
Events in quadrant B3,778,079778,202
Events in quadrant C3,745,857744,182
Events in quadrant D5,800,040651,740

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337583
B0159142
C0162092
D0220502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7119172824.273072%
B71193014.228122%
C71203524.943820%
D71207079.929775%

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 7689 7119 1202 1202 15.63% 16.88%
B 7689 7120 56 56 0.73% 0.79%
C 7690 7121 162 162 2.11% 2.27%
D 7690 7121 432 432 5.62% 6.07%

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 15 223 4179953 26653.85 751 734 156.8
A 10 83 2444997 15588.8 751 734 156.8
A 2 79 97485 617.05 751 734 156.8
B 5 172 239912 1453.08 825 799 164.6
B 4 170 59301 355.51 825 799 164.6
B 3 112 53904 322.72 825 799 164.6
C 1 3 506206 2647.38 812 816 190.9
C 2 14 22681 114.53 812 816 190.9
C 12 250 11590 56.43 812 816 190.9
D 1 52 1272899 6281.36 797 772 202.5
D 13 249 596579 2941.91 797 772 202.5
D 5 235 180268 886.29 797 772 202.5

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