ASTROSAT CZTI

Data Quality Report

Orbit 31868

Creation date: 2024-06-27T20:33:41.152700
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_31868cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31868cztM0_level2_quad_clean.evt
Size (bytes)1,547,858,880254,056,320
Size1.4 GB 242.3 MB
Events in quadrant A8,929,1271,663,897
Events in quadrant B14,227,5561,644,628
Events in quadrant C11,433,0271,562,978
Events in quadrant D11,036,8911,544,395

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381504
B0564586
C0460514
D0452334

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18559490.264023%
B185582701.454898%
C185596353.421521%
D185591961.056091%

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 20734 18563 0 0 0.00% 0.00%
B 20733 18562 25 25 0.12% 0.13%
C 20734 18563 128 128 0.62% 0.69%
D 20734 18563 99 99 0.48% 0.53%

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 28152 55.89 2313 2272 463.1
A 3 137 24029 46.98 2313 2272 463.1
A 0 226 19089 36.32 2313 2272 463.1
B 6 159 4899254 11271.85 2279 2221 434.4
B 0 213 112674 254.24 2279 2221 434.4
B 10 247 98213 220.95 2279 2221 434.4
C 3 233 866942 1677.93 2201 2218 515.4
C 10 22 784245 1517.46 2201 2218 515.4
C 0 10 610133 1179.61 2201 2218 515.4
D 8 195 1959289 3646.47 2233 2176 536.7
D 12 233 171706 315.87 2233 2176 536.7
D 2 250 131860 241.63 2233 2176 536.7

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