ASTROSAT CZTI

Data Quality Report

Orbit 29857

Creation date: 2024-06-27T20:08:21.464757
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/AS1T03_291T01_9000004278_29857cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29857cztM0_level2_quad_clean.evt
Size (bytes)88,511,04010,581,120
Size84.4 MB 10.1 MB
Events in quadrant A570,78864,216
Events in quadrant B794,35864,239
Events in quadrant C687,22460,888
Events in quadrant D566,01262,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022702
B029472
C026872
D022732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A865637.283237%
B86619822.863741%
C86616118.591224%
D866232.655889%

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 895 866 3 3 0.34% 0.35%
B 896 867 0 0 0.00% 0.00%
C 896 867 0 0 0.00% 0.00%
D 896 867 1 1 0.11% 0.12%

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 53402 1799.83 134 130 29.6
A 13 254 1760 55.07 134 130 29.6
A 3 137 1545 47.81 134 130 29.6
B 6 159 258761 9149.15 132 128 28.3
B 0 190 13417 470.1 132 128 28.3
B 12 111 3533 120.45 132 128 28.3
C 3 233 142946 4472.53 127 126 31.9
C 14 238 27609 860.65 127 126 31.9
C 14 254 11761 364.36 127 126 31.9
D 8 195 49729 1457.43 132 127 34.0
D 1 52 5270 151.11 132 127 34.0
D 2 234 4047 115.18 132 127 34.0

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