ASTROSAT CZTI

Data Quality Report

Orbit 21944

Creation date: 2024-06-27T18:34:18.810872
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/AS1A07_007T02_9000003244_21944cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21944cztM0_level2_quad_clean.evt
Size (bytes)470,376,000118,154,880
Size448.6 MB 112.7 MB
Events in quadrant A3,334,683797,253
Events in quadrant B3,577,328803,204
Events in quadrant C3,428,187783,490
Events in quadrant D3,484,027761,884

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139162
B0147662
C0141502
D0143823

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62021241.999355%
B62021712.757175%
C62021692.724927%
D62011121.806160%

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 7512 6202 0 0 0.00% 0.00%
B 7512 6202 22 22 0.29% 0.35%
C 7512 6202 0 0 0.00% 0.00%
D 7511 6201 5 5 0.07% 0.08%

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 9290 49.56 865 849 170.3
A 0 226 7543 39.3 865 849 170.3
A 3 137 6848 35.22 865 849 170.3
B 0 197 97209 612.3 851 833 157.4
B 0 230 69757 437.89 851 833 157.4
B 3 64 54789 342.79 851 833 157.4
C 14 238 134957 688.6 843 852 194.8
C 0 10 7307 33.15 843 852 194.8
C 13 61 5648 24.63 843 852 194.8
D 1 52 199854 969.93 854 829 205.2
D 13 172 34433 163.77 854 829 205.2
D 2 234 23116 108.61 854 829 205.2

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