ASTROSAT CZTI

Data Quality Report

Orbit 22696

Creation date: 2024-06-27T18:44:31.542077
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/AS1A08_007T01_9000003362_22696cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22696cztM0_level2_quad_clean.evt
Size (bytes)536,581,44088,899,840
Size511.7 MB 84.8 MB
Events in quadrant A3,391,917585,980
Events in quadrant B3,473,109590,003
Events in quadrant C3,503,065550,715
Events in quadrant D5,463,798534,296

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138651
B0141511
C0142571
D0205171

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172651.053143%
B6173801.295966%
C61731672.705330%
D61735508.909768%

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 7538 6174 0 0 0.00% 0.00%
B 7539 6175 3 3 0.04% 0.05%
C 7539 6175 53 53 0.70% 0.86%
D 7539 6175 421 421 5.58% 6.82%

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 11513 62.33 876 863 170.9
A 13 170 8383 44.01 876 863 170.9
A 0 226 7841 40.84 876 863 170.9
B 0 230 29540 183.3 860 844 156.5
B 0 228 28781 178.46 860 844 156.5
B 0 190 19135 116.84 860 844 156.5
C 10 22 176049 942.23 819 828 186.0
C 14 238 132641 708.81 819 828 186.0
C 13 61 5712 26.26 819 828 186.0
D 1 52 1343867 6871.73 823 804 195.4
D 12 33 525860 2686.43 823 804 195.4
D 12 233 190456 970.35 823 804 195.4

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