ASTROSAT CZTI

Data Quality Report

Orbit 26084

Creation date: 2024-06-27T19:24:52.510059
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/AS1A09_126T01_9000003772_26084cztM0_level2.evt modeM0/AS1A09_126T01_9000003772_26084cztM0_level2_quad_clean.evt
Size (bytes)130,982,4009,054,720
Size124.9 MB 8.6 MB
Events in quadrant A972,34541,332
Events in quadrant B942,46941,824
Events in quadrant C954,38538,468
Events in quadrant D992,05839,491

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039970
B038030
C039100
D039610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1511966.353408%
B15111087.147584%
C15111379.066843%
D1510946.225166%

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 2861 1511 0 0 0.00% 0.00%
B 2861 1511 0 0 0.00% 0.00%
C 2861 1511 0 0 0.00% 0.00%
D 2860 1510 0 0 0.00% 0.00%

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 29000 569.47 244 239 50.5
A 13 254 2177 38.37 244 239 50.5
A 0 226 2137 37.58 244 239 50.5
B 12 111 5309 107.81 241 235 47.1
B 11 111 4857 98.2 241 235 47.1
B 14 111 4695 94.76 241 235 47.1
C 14 238 37619 672.2 234 236 55.6
C 3 233 2907 48.03 234 236 55.6
C 13 61 1612 24.74 234 236 55.6
D 7 80 42683 732.8 239 233 57.9
D 1 52 41279 708.56 239 233 57.9
D 2 234 4480 73.31 239 233 57.9

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