ASTROSAT CZTI

Data Quality Report

Orbit 25808

Creation date: 2024-06-27T19:21:39.858643
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_068T01_9000003756_25808cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25808cztM0_level2_quad_clean.evt
Size (bytes)545,178,24098,280,000
Size519.9 MB 93.7 MB
Events in quadrant A4,393,657621,437
Events in quadrant B3,374,161682,450
Events in quadrant C3,279,458629,658
Events in quadrant D5,042,288608,665

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171230
B0138790
C0136180
D0191400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62194637.444927%
B6219580.932626%
C62191051.688374%
D62181852.975233%

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 7579 6219 408 408 5.38% 6.56%
B 7579 6219 1 1 0.01% 0.02%
C 7579 6219 2 2 0.03% 0.03%
D 7578 6218 129 129 1.70% 2.07%

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 0 13 1277116 7963.24 809 797 160.3
A 13 254 8695 49.28 809 797 160.3
A 0 226 7053 39.03 809 797 160.3
B 0 190 26243 161.82 840 824 157.1
B 0 229 19881 121.32 840 824 157.1
B 0 219 19688 120.09 840 824 157.1
C 14 238 130177 711.67 790 797 181.8
C 3 233 41633 224.62 790 797 181.8
C 0 207 21849 115.8 790 797 181.8
D 7 223 1181669 6177.81 793 774 191.2
D 1 52 384249 2006.13 793 774 191.2
D 7 80 369032 1926.53 793 774 191.2

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