ASTROSAT CZTI

Data Quality Report

Orbit 08878

Creation date: 2024-06-27T15:38:33.892277
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/AS1G07_046T01_9000001236_08878cztM0_level2.evt modeM0/AS1G07_046T01_9000001236_08878cztM0_level2_quad_clean.evt
Size (bytes)79,012,80013,662,720
Size75.4 MB 13.0 MB
Events in quadrant A790,42287,303
Events in quadrant B497,56991,643
Events in quadrant C490,34888,627
Events in quadrant D558,90583,966

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028911
B019681
C019401
D021551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77311715.135834%
B7738410.866753%
C773486.209573%
D773617.891332%

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 973 775 0 0 0.00% 0.00%
B 973 775 0 0 0.00% 0.00%
C 973 775 3 3 0.31% 0.39%
D 973 774 7 7 0.72% 0.90%

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 8 5 328191 12162.89 118 114 27.0
A 0 128 6829 248.95 118 114 27.0
A 0 226 1057 34.96 118 114 27.0
B 6 51 18345 676.04 121 118 27.0
B 4 173 5463 198.25 121 118 27.0
B 12 111 2831 100.62 121 118 27.0
C 14 234 24749 801.22 118 119 30.7
C 9 68 2719 84.58 118 119 30.7
C 13 61 906 25.6 118 119 30.7
D 7 71 36964 1139.06 117 113 32.4
D 8 195 33371 1028.0 117 113 32.4
D 1 52 26739 823.0 117 113 32.4

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