ASTROSAT CZTI

Data Quality Report

Orbit 31225

Creation date: 2024-06-27T20:25:16.996875
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/AS1C06_002T02_9000004518_31225cztM0_level2.evt modeM0/AS1C06_002T02_9000004518_31225cztM0_level2_quad_clean.evt
Size (bytes)658,941,120108,305,280
Size628.4 MB 103.3 MB
Events in quadrant A3,160,122744,470
Events in quadrant B5,478,694721,365
Events in quadrant C3,860,865699,482
Events in quadrant D7,019,029662,539

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134921
B0206541
C0156331
D0254971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6478570.879901%
B64791953.009724%
C64792644.074703%
D64786289.694350%

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 7448 6479 9 9 0.12% 0.14%
B 7449 6480 33 33 0.44% 0.51%
C 7449 6480 72 72 0.97% 1.11%
D 7448 6479 455 455 6.11% 7.02%

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 15 174 27936 170.26 803 789 159.4
A 12 96 16855 100.76 803 789 159.4
A 5 16 16832 100.62 803 789 159.4
B 6 159 2034534 13862.2 786 768 146.7
B 4 80 145882 989.1 786 768 146.7
B 4 171 50639 339.92 786 768 146.7
C 0 10 466389 2614.23 764 768 178.1
C 14 238 143218 799.79 764 768 178.1
C 3 233 113974 635.59 764 768 178.1
D 8 195 3140468 15998.28 754 743 196.3
D 12 218 574780 2924.97 754 743 196.3
D 13 249 137269 695.66 754 743 196.3

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