ASTROSAT CZTI

Data Quality Report

Orbit 23732

Creation date: 2024-06-27T18:58:09.234318
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_027T14_9000003510_23732cztM0_level2.evt modeM0/AS1A07_027T14_9000003510_23732cztM0_level2_quad_clean.evt
Size (bytes)867,908,16090,296,640
Size827.7 MB 86.1 MB
Events in quadrant A4,120,440544,299
Events in quadrant B5,144,188548,774
Events in quadrant C4,222,965534,263
Events in quadrant D12,197,785490,642

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180261
B0208811
C0180871
D0424431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8871941.059633%
B88722462.772768%
C88721271.431470%
D8872204323.027502%

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 9301 8871 0 0 0.00% 0.00%
B 9302 8872 112 112 1.20% 1.26%
C 9302 8872 2 2 0.02% 0.02%
D 9302 8872 1853 1853 19.92% 20.89%

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 14693 63.44 1063 1039 215.2
A 5 168 12227 51.98 1063 1039 215.2
A 3 137 9670 40.1 1063 1039 215.2
B 3 64 387886 1907.12 1049 1021 202.9
B 0 189 286661 1408.12 1049 1021 202.9
B 0 229 276231 1356.7 1049 1021 202.9
C 14 238 159537 657.58 1021 1026 241.1
C 7 247 35783 144.19 1021 1026 241.1
C 4 175 17295 67.49 1021 1026 241.1
D 8 195 6056440 25410.28 973 944 238.3
D 1 52 1576133 6609.86 973 944 238.3
D 12 233 544886 2282.51 973 944 238.3

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