ASTROSAT CZTI

Data Quality Report

Orbit 19506

Creation date: 2024-06-27T18:03:36.449077
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/AS1A05_175T01_9000002894_19506cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19506cztM0_level2_quad_clean.evt
Size (bytes)550,748,160100,445,760
Size525.2 MB 95.8 MB
Events in quadrant A3,267,366654,188
Events in quadrant B3,408,871660,838
Events in quadrant C3,562,477632,083
Events in quadrant D5,956,730598,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145612
B0147612
C0151002
D0224002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7135280.392432%
B7136570.798767%
C7136981.373318%
D713675510.580157%

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 8805 7136 0 0 0.00% 0.00%
B 8806 7138 2 2 0.02% 0.03%
C 8806 7137 0 0 0.00% 0.00%
D 8806 7137 668 668 7.59% 9.36%

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 0 226 7292 37.77 847 827 171.2
A 3 137 6872 35.32 847 827 171.2
A 12 194 5869 29.46 847 827 171.2
B 0 198 34560 207.98 843 821 162.2
B 3 64 23433 139.39 843 821 162.2
B 12 111 20406 120.73 843 821 162.2
C 3 233 158958 817.72 817 820 193.4
C 14 238 127914 657.19 817 820 193.4
C 9 221 48144 244.71 817 820 193.4
D 12 218 2397095 12518.7 789 766 191.4
D 1 52 307022 1599.92 789 766 191.4
D 12 250 73949 382.32 789 766 191.4

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