ASTROSAT CZTI

Data Quality Report

Orbit 20135

Creation date: 2024-06-27T18:11:42.057803
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_180T01_9000002992_20135cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20135cztM0_level2_quad_clean.evt
Size (bytes)536,281,92075,896,640
Size511.4 MB 72.4 MB
Events in quadrant A4,327,886458,173
Events in quadrant B3,643,926482,719
Events in quadrant C3,700,612458,888
Events in quadrant D4,136,179452,850

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166722
B0146732
C0148372
D0162302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63814096.409654%
B63821642.569727%
C63811642.570130%
D63812163.385049%

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 7671 6382 184 184 2.40% 2.88%
B 7672 6383 2 2 0.03% 0.03%
C 7671 6382 0 0 0.00% 0.00%
D 7671 6381 106 106 1.38% 1.66%

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 14 238 862857 4842.74 895 882 178.0
A 11 29 12606 65.87 895 882 178.0
A 0 226 7737 38.51 895 882 178.0
B 10 245 35929 209.84 897 880 167.0
B 0 183 35198 205.47 897 880 167.0
B 0 214 27298 158.17 897 880 167.0
C 3 233 210283 1062.8 856 866 197.0
C 14 238 136989 690.83 856 866 197.0
C 8 208 9138 41.98 856 866 197.0
D 1 52 632030 3018.32 877 855 209.1
D 2 153 127968 607.86 877 855 209.1
D 2 234 24405 112.62 877 855 209.1

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