ASTROSAT CZTI

Data Quality Report

Orbit 15895

Creation date: 2024-06-27T17:14:52.815108
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/AS1A04_143T01_9000002344_15895cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15895cztM0_level2_quad_clean.evt
Size (bytes)474,445,44091,454,400
Size452.5 MB 87.2 MB
Events in quadrant A3,799,098579,734
Events in quadrant B3,349,279599,239
Events in quadrant C3,379,291568,672
Events in quadrant D3,386,161555,295

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157943
B0142582
C0143042
D0146582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66932283.406544%
B6693610.911400%
C6693630.941282%
D6693600.896459%

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 7624 6695 139 139 1.82% 2.08%
B 7624 6695 4 4 0.05% 0.06%
C 7624 6695 0 0 0.00% 0.00%
D 7624 6695 25 25 0.33% 0.37%

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 15 239 641623 3928.11 812 797 163.1
A 9 143 11929 68.24 812 797 163.1
A 7 16 11415 65.09 812 797 163.1
B 4 173 32923 202.88 829 808 158.3
B 0 229 22495 137.0 829 808 158.3
B 0 190 20081 121.75 829 808 158.3
C 14 238 121726 645.48 796 802 187.3
C 3 233 86217 455.94 796 802 187.3
C 7 247 67186 354.35 796 802 187.3
D 12 218 284009 1437.99 801 779 197.0
D 2 120 57122 286.06 801 779 197.0
D 2 234 28562 141.06 801 779 197.0

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