ASTROSAT CZTI

Data Quality Report

Orbit 23331

Creation date: 2024-06-27T18:52:54.957747
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_148T05_9000003446_23331cztM0_level2.evt modeM0/AS1A07_148T05_9000003446_23331cztM0_level2_quad_clean.evt
Size (bytes)814,472,64078,272,640
Size776.7 MB 74.6 MB
Events in quadrant A3,418,891528,753
Events in quadrant B3,397,775531,945
Events in quadrant C3,512,648511,074
Events in quadrant D13,909,987356,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141012
B0139062
C0142392
D0455992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6321620.980857%
B6320651.028481%
C6320831.313291%
D6320463073.259494%

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 7541 6321 4 4 0.05% 0.06%
B 7540 6320 4 4 0.05% 0.06%
C 7540 6320 0 0 0.00% 0.00%
D 7540 6320 4506 4506 59.76% 71.30%

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 6 16 58806 333.32 872 858 173.9
A 13 254 9401 49.14 872 858 173.9
A 0 226 7620 38.9 872 858 173.9
B 0 229 27130 163.93 855 836 160.4
B 12 111 18967 113.04 855 836 160.4
B 11 111 16868 99.95 855 836 160.4
C 14 238 133219 689.58 830 838 192.0
C 10 9 112164 579.9 830 838 192.0
C 7 247 25551 128.73 830 838 192.0
D 7 223 11066381 74468.01 615 597 148.6
D 7 238 314097 2109.72 615 597 148.6
D 1 52 147359 987.65 615 597 148.6

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