ASTROSAT CZTI

Data Quality Report

Orbit 08899

Creation date: 2024-06-27T15:38:43.249841
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/AS1A03_092T01_9000001240_08899cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08899cztM0_level2_quad_clean.evt
Size (bytes)795,726,720129,611,520
Size758.9 MB 123.6 MB
Events in quadrant A5,995,474789,768
Events in quadrant B5,572,405796,542
Events in quadrant C5,231,099786,584
Events in quadrant D6,527,997763,744

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247293
B0239272
C0234012
D0263082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113961291.131976%
B113961541.351351%
C11396940.824851%
D113961681.474201%

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 13586 11396 13 13 0.10% 0.11%
B 13586 11396 30 30 0.22% 0.26%
C 13586 11396 0 0 0.00% 0.00%
D 13586 11396 56 56 0.41% 0.49%

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 557659 1992.03 1379 1351 279.3
A 15 174 79549 280.01 1379 1351 279.3
A 5 16 43870 152.25 1379 1351 279.3
B 10 16 135433 518.7 1378 1347 258.5
B 6 51 49554 186.48 1378 1347 258.5
B 4 173 29683 109.61 1378 1347 258.5
C 13 61 10061 28.45 1338 1343 306.4
C 1 3 6365 16.39 1338 1343 306.4
C 3 254 4731 11.06 1338 1343 306.4
D 8 195 717642 2192.52 1330 1299 326.7
D 1 52 216668 659.18 1330 1299 326.7
D 7 71 174981 531.59 1330 1299 326.7

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