ASTROSAT CZTI

Data Quality Report

Orbit 20847

Creation date: 2024-06-27T18:20:20.449854
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/AS1C04_001T01_9000003074_20847cztM0_level2.evt modeM0/AS1C04_001T01_9000003074_20847cztM0_level2_quad_clean.evt
Size (bytes)715,403,520115,937,280
Size682.3 MB 110.6 MB
Events in quadrant A3,331,200805,806
Events in quadrant B4,200,533785,510
Events in quadrant C3,326,482755,229
Events in quadrant D10,336,010677,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145221
B0171141
C0144721
D0355102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69781251.791344%
B69792323.324258%
C69791632.335578%
D6978187726.898825%

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 7268 6978 0 0 0.00% 0.00%
B 7269 6979 42 42 0.58% 0.60%
C 7268 6978 1 1 0.01% 0.01%
D 7267 6977 1802 1802 24.80% 25.83%

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 2 79 74385 429.71 845 826 171.2
A 0 226 7342 38.06 845 826 171.2
A 8 205 6839 35.13 845 826 171.2
B 7 220 362011 2260.98 829 808 159.8
B 0 189 341345 2131.62 829 808 159.8
B 0 190 64530 398.87 829 808 159.8
C 14 238 124550 658.55 803 807 187.9
C 9 54 26828 138.48 803 807 187.9
C 7 247 12806 63.86 803 807 187.9
D 1 20 6628189 35495.26 772 749 186.7
D 1 239 240859 1285.98 772 749 186.7
D 9 1 193142 1030.42 772 749 186.7

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