ASTROSAT CZTI

Data Quality Report

Orbit 31845

Creation date: 2024-06-27T20:33:25.682347
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/AS1A10_109T01_9000004646_31845cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31845cztM0_level2_quad_clean.evt
Size (bytes)598,694,400122,048,640
Size571.0 MB 116.4 MB
Events in quadrant A3,766,970847,581
Events in quadrant B5,335,212831,969
Events in quadrant C4,476,217791,594
Events in quadrant D4,117,970776,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155422
B0201242
C0179012
D0165192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64301081.679627%
B64301812.814930%
C64304336.734059%
D64301742.706065%

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 7750 6431 0 0 0.00% 0.00%
B 7750 6431 1 1 0.01% 0.02%
C 7750 6431 174 174 2.25% 2.71%
D 7750 6431 67 67 0.86% 1.04%

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 13 254 10710 50.83 977 965 191.7
A 3 137 8755 40.63 977 965 191.7
A 0 226 8277 38.14 977 965 191.7
B 6 159 1623883 9234.28 941 923 175.8
B 12 111 20414 110.9 941 923 175.8
B 11 111 19174 103.84 941 923 175.8
C 0 10 635435 3069.23 896 910 206.7
C 14 238 153054 735.93 896 910 206.7
C 3 233 132515 636.58 896 910 206.7
D 12 218 248294 1134.82 934 916 218.0
D 8 195 220197 1005.93 934 916 218.0
D 12 233 35247 157.49 934 916 218.0

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