ASTROSAT CZTI

Data Quality Report

Orbit 18525

Creation date: 2024-06-27T17:50:59.522571
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/AS1A05_187T03_9000002748_18525cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18525cztM0_level2_quad_clean.evt
Size (bytes)485,524,800110,727,360
Size463.0 MB 105.6 MB
Events in quadrant A3,385,281748,327
Events in quadrant B3,512,046752,257
Events in quadrant C3,339,728707,647
Events in quadrant D4,027,215693,494

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143332
B0146882
C0141212
D0163522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64751131.745174%
B64751562.409266%
C64751332.054054%
D64752644.077220%

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 8800 6475 6 6 0.07% 0.09%
B 8800 6475 39 39 0.44% 0.60%
C 8800 6475 0 0 0.00% 0.00%
D 8800 6475 141 141 1.60% 2.18%

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 15 192 25710 143.18 863 845 173.7
A 14 111 13427 72.45 863 845 173.7
A 9 143 11303 60.22 863 845 173.7
B 7 220 135764 843.25 845 826 160.0
B 3 64 55743 343.18 845 826 160.0
B 12 111 18467 110.24 845 826 160.0
C 14 238 127143 672.73 810 819 187.8
C 9 54 38538 200.87 810 819 187.8
C 0 207 9474 46.09 810 819 187.8
D 7 238 478503 2368.08 826 801 201.7
D 13 168 363795 1799.45 826 801 201.7
D 1 52 31978 154.55 826 801 201.7

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