ASTROSAT CZTI

Data Quality Report

Orbit 06641

Creation date: 2024-06-27T15:09:45.524832
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/AS1A02_189T01_9000000902_06641cztM0_level2.evt modeM0/AS1A02_189T01_9000000902_06641cztM0_level2_quad_clean.evt
Size (bytes)94,999,68015,621,120
Size90.6 MB 14.9 MB
Events in quadrant A441,368111,130
Events in quadrant B1,252,47588,545
Events in quadrant C386,516108,034
Events in quadrant D739,509101,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017761
B042760
C016150
D027610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80050.625000%
B80033541.875000%
C80000.000000%
D800121.500000%

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 800 800 5 5 0.62% 0.62%
B 800 800 250 250 31.25% 31.25%
C 800 800 0 0 0.00% 0.00%
D 800 800 11 11 1.38% 1.38%

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 15 42223 1907.41 99 96 22.1
A 13 248 9753 437.25 99 96 22.1
A 15 239 4151 183.6 99 96 22.1
B 0 228 895333 49878.23 84 82 17.9
B 4 170 18379 1019.4 84 82 17.9
B 4 81 3075 166.75 84 82 17.9
C 13 61 780 27.95 98 99 24.4
C 3 202 249 6.16 98 99 24.4
C 7 226 222 5.05 98 99 24.4
D 8 195 298141 11469.55 97 94 26.0
D 2 136 21546 825.52 97 94 26.0
D 12 221 13936 532.67 97 94 26.0

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