ASTROSAT CZTI

Data Quality Report

Orbit 22050

Creation date: 2024-06-27T18:35:54.905298
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/AS1A07_167T01_9000003264_22050cztM0_level2.evt modeM0/AS1A07_167T01_9000003264_22050cztM0_level2_quad_clean.evt
Size (bytes)626,443,200115,583,040
Size597.4 MB 110.2 MB
Events in quadrant A3,954,422746,482
Events in quadrant B4,137,387759,044
Events in quadrant C3,937,877722,721
Events in quadrant D6,376,154692,289

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173032
B0177602
C0171602
D0247712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8344851.018696%
B83451181.414020%
C83451111.330138%
D83444675.596836%

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 8929 8345 8 8 0.09% 0.10%
B 8930 8347 9 9 0.10% 0.11%
C 8930 8345 0 0 0.00% 0.00%
D 8929 8345 385 385 4.31% 4.61%

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 15 236 29106 137.96 1012 988 203.8
A 5 16 17184 79.46 1012 988 203.8
A 13 254 14599 66.78 1012 988 203.8
B 3 64 52666 270.74 1011 984 190.9
B 0 197 49350 253.37 1011 984 190.9
B 0 230 30920 156.82 1011 984 190.9
C 14 238 153935 674.88 966 970 226.7
C 13 61 6750 25.5 966 970 226.7
C 5 4 6576 24.73 966 970 226.7
D 1 52 1382974 5901.22 964 934 234.2
D 12 233 296574 1262.36 964 934 234.2
D 5 222 296376 1261.52 964 934 234.2

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