ASTROSAT CZTI

Data Quality Report

Orbit 23064

Creation date: 2024-06-27T18:49:17.733550
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_049T01_9000003408_23064cztM0_level2.evt modeM0/AS1A07_049T01_9000003408_23064cztM0_level2_quad_clean.evt
Size (bytes)529,369,920102,574,080
Size504.8 MB 97.8 MB
Events in quadrant A3,502,645656,114
Events in quadrant B3,636,062668,414
Events in quadrant C3,577,024639,003
Events in quadrant D4,806,893620,987

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153931
B0156631
C0155301
D0189661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7509941.251831%
B75101371.824234%
C75101421.890812%
D75102263.009321%

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 7834 7510 0 0 0.00% 0.00%
B 7835 7511 16 16 0.20% 0.21%
C 7835 7511 4 4 0.05% 0.05%
D 7835 7511 128 128 1.63% 1.70%

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 10840 54.1 906 885 184.0
A 3 137 8373 40.69 906 885 184.0
A 6 16 8200 39.75 906 885 184.0
B 4 216 72022 407.73 899 874 174.5
B 12 111 21720 119.46 899 874 174.5
B 11 111 19807 108.5 899 874 174.5
C 14 238 136248 661.24 864 867 204.7
C 10 22 26383 124.62 864 867 204.7
C 0 10 16285 75.3 864 867 204.7
D 1 52 936617 4387.11 873 844 213.3
D 1 239 386499 1808.03 873 844 213.3
D 13 174 105675 491.47 873 844 213.3

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