ASTROSAT CZTI

Data Quality Report

Orbit 13464

Creation date: 2024-06-27T16:41:12.563329
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_103T01_9000001988_13464cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13464cztM0_level2_quad_clean.evt
Size (bytes)456,059,520102,942,720
Size434.9 MB 98.2 MB
Events in quadrant A3,334,999658,470
Events in quadrant B3,457,090673,912
Events in quadrant C3,334,816654,179
Events in quadrant D3,191,854626,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149353
B0150942
C0148582
D0149132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7247320.441562%
B7247610.841728%
C7247110.151787%
D7247110.151787%

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 7908 7249 0 0 0.00% 0.00%
B 7908 7249 6 6 0.08% 0.08%
C 7908 7249 1 1 0.01% 0.01%
D 7908 7249 3 3 0.04% 0.04%

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 8 15 14626 79.02 860 842 174.4
A 1 162 9271 48.32 860 842 174.4
A 0 226 7724 39.45 860 842 174.4
B 3 64 39919 236.47 866 843 165.2
B 3 209 20854 121.1 866 843 165.2
B 12 111 19374 112.14 866 843 165.2
C 3 233 62541 318.27 835 838 193.9
C 14 220 13800 66.86 835 838 193.9
C 13 61 5937 26.3 835 838 193.9
D 9 85 30713 151.59 824 803 197.3
D 2 234 23375 114.4 824 803 197.3
D 8 195 20963 102.18 824 803 197.3

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