ASTROSAT CZTI

Data Quality Report

Orbit 31307

Creation date: 2024-06-27T20:24:03.436182
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/AS1T04_018T01_9000004494_31307cztM0_level2.evt modeM0/AS1T04_018T01_9000004494_31307cztM0_level2_quad_clean.evt
Size (bytes)124,392,96035,400,960
Size118.6 MB 33.8 MB
Events in quadrant A798,392250,431
Events in quadrant B1,181,849246,126
Events in quadrant C836,883233,143
Events in quadrant D848,311233,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03669442
B05021579
C03820458
D03862442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092
B0123
C0103
D0102

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366
B0344
C0355
D0346

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A145580.549828%
B1443271.871102%
C1469211.429544%
D146470.478142%

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 1490 1482 0 0 0.00% 0.00%
B 1490 1478 0 0 0.00% 0.00%
C 1490 1486 1 1 0.07% 0.07%
D 1490 1481 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 13 254 2555 56.52 206 203 41.6
A 0 226 1726 36.6 206 203 41.6
A 3 137 1716 36.36 206 203 41.6
B 6 159 370156 9471.57 199 196 39.1
B 15 33 27470 698.26 199 196 39.1
B 12 111 4409 107.86 199 196 39.1
C 14 238 32792 700.67 193 195 46.5
C 3 233 27411 585.01 193 195 46.5
C 0 10 19683 418.89 193 195 46.5
D 8 195 106072 2222.56 195 191 47.6
D 2 234 3875 77.33 195 191 47.6
D 3 238 2994 58.84 195 191 47.6

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