ASTROSAT CZTI

Data Quality Report

Orbit 20240

Creation date: 2024-06-27T18:12:53.291156
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/AS1T03_123T01_9000003000_20240cztM0_level2.evt modeM0/AS1T03_123T01_9000003000_20240cztM0_level2_quad_clean.evt
Size (bytes)596,629,44086,725,440
Size569.0 MB 82.7 MB
Events in quadrant A3,911,688533,754
Events in quadrant B4,302,234535,906
Events in quadrant C3,890,854508,815
Events in quadrant D5,431,213501,284

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165752
B0176262
C0163652
D0214672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78572363.003691%
B78573073.907344%
C78572573.270969%
D78563424.353360%

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 8622 7859 21 21 0.24% 0.27%
B 8622 7859 10 10 0.12% 0.13%
C 8622 7859 0 0 0.00% 0.00%
D 8621 7858 137 137 1.59% 1.74%

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 4 2 96541 483.74 990 968 197.6
A 3 137 8718 39.22 990 968 197.6
A 0 226 8272 36.97 990 968 197.6
B 10 245 365126 1914.66 978 952 190.2
B 0 85 34073 174.14 978 952 190.2
B 12 111 24217 122.32 978 952 190.2
C 14 238 145993 654.35 940 943 221.7
C 3 233 77396 344.9 940 943 221.7
C 13 61 6384 24.55 940 943 221.7
D 7 238 1091638 4696.28 957 928 232.3
D 1 52 695790 2991.87 957 928 232.3
D 2 234 37533 157.61 957 928 232.3

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