ASTROSAT CZTI

Data Quality Report

Orbit 38372

Creation date: 2024-06-27T21:52:01.530584
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/AS1A12_006T07_9000005376_38372cztM0_level2.fits modeM0/AS1A12_006T07_9000005376_38372cztM0_level2_quad_clean.evt
Size (bytes)483,526,08067,340,160
Size461.1 MB 64.2 MB
Events in quadrant A3,096,887482,686
Events in quadrant B4,046,848400,932
Events in quadrant C3,074,385466,521
Events in quadrant D7,359,127396,522

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118611
B0146461
C0119221
D0246221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4151360.867261%
B415183720.163816%
C41511653.974946%
D415171417.200675%

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 4151 4151 18 18 0.43% 0.43%
B 4151 4151 626 626 15.08% 15.08%
C 4151 4151 116 116 2.79% 2.79%
D 4151 4151 1356 1356 32.67% 32.67%

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 12 16 816713 8573.81 467 455 95.2
A 10 83 257323 2698.09 467 455 95.2
A 12 194 113263 1184.91 467 455 95.2
B 5 184 2034596 24437.96 430 418 83.2
B 0 183 212706 2550.36 430 418 83.2
B 4 21 51292 611.18 430 418 83.2
C 14 254 1118953 10575.3 453 456 105.8
C 15 214 172214 1623.96 453 456 105.8
C 0 10 6834 60.3 453 456 105.8
D 10 203 5229232 48061.68 437 425 108.8
D 12 227 160101 1467.7 437 425 108.8
D 10 253 93191 852.68 437 425 108.8

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