ASTROSAT CZTI

Data Quality Report

Orbit 15823

Creation date: 2024-06-27T17:14:01.439152
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/AS1A04_143T01_9000002344_15823cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15823cztM0_level2_quad_clean.evt
Size (bytes)491,094,720101,252,160
Size468.3 MB 96.6 MB
Events in quadrant A3,605,824645,986
Events in quadrant B3,773,718657,608
Events in quadrant C3,523,583630,865
Events in quadrant D3,471,075621,156

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155643
B0159452
C0151492
D0154042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73341181.608945%
B73341391.895282%
C73341021.390783%
D7334630.859013%

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 8075 7336 37 37 0.46% 0.50%
B 8075 7336 40 40 0.50% 0.55%
C 8075 7336 0 0 0.00% 0.00%
D 8075 7336 6 6 0.07% 0.08%

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 9 143 171520 943.63 888 871 180.8
A 15 239 21522 114.19 888 871 180.8
A 0 226 7793 38.28 888 871 180.8
B 4 173 159725 939.5 886 864 169.1
B 3 209 34753 200.42 886 864 169.1
B 10 245 34302 197.75 886 864 169.1
C 14 238 131858 644.13 859 865 203.4
C 7 247 40806 196.4 859 865 203.4
C 13 61 6068 25.58 859 865 203.4
D 1 52 48312 220.99 873 849 214.8
D 2 152 36527 166.12 873 849 214.8
D 10 40 35425 160.99 873 849 214.8

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