ASTROSAT CZTI

Data Quality Report

Orbit 43440

Creation date: 2024-06-27T22:52:00.594536
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_018T01_9000005874_43440cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43440cztM0_level2_quad_clean.evt
Size (bytes)992,499,840136,612,800
Size946.5 MB 130.3 MB
Events in quadrant A17,690,158505,058
Events in quadrant B4,761,7961,067,690
Events in quadrant C4,677,2701,006,296
Events in quadrant D8,851,951878,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0593944
B0207482
C0200882
D0330742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9784550256.234669%
B9785450.459888%
C978540.040879%
D97858098.267757%

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 12920 9785 5052 5052 39.10% 51.63%
B 12921 9787 24 24 0.19% 0.25%
C 12921 9787 1 1 0.01% 0.01%
D 12921 9787 775 775 6.00% 7.92%

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 15 222 13512914 87222.06 762 747 154.9
A 10 83 705588 4549.8 762 747 154.9
A 15 237 486702 3136.88 762 747 154.9
B 0 189 199333 996.22 1039 1010 199.1
B 0 199 165215 824.84 1039 1010 199.1
B 15 85 84222 417.99 1039 1010 199.1
C 15 214 401657 1705.68 1019 1022 234.9
C 3 233 274232 1163.18 1019 1022 234.9
C 15 159 15159 60.19 1019 1022 234.9
D 1 52 2912401 12135.02 987 959 239.9
D 2 16 592642 2466.16 987 959 239.9
D 13 249 413886 1721.1 987 959 239.9

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