ASTROSAT CZTI

Data Quality Report

Orbit 13527

Creation date: 2024-06-27T16:42:07.242895
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_048T01_9000001992_13527cztM0_level2.evt modeM0/AS1A04_048T01_9000001992_13527cztM0_level2_quad_clean.evt
Size (bytes)1,222,966,080241,329,600
Size1.1 GB 230.1 MB
Events in quadrant A8,468,7591,531,490
Events in quadrant B9,158,2541,548,506
Events in quadrant C9,355,5981,511,811
Events in quadrant D8,794,7451,434,104

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379025
B0395554
C0392144
D0395734

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18622540.289980%
B186222401.288798%
C186221090.585329%
D186222421.299538%

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 20913 18626 0 0 0.00% 0.00%
B 20913 18624 69 69 0.33% 0.37%
C 20913 18626 15 15 0.07% 0.08%
D 20913 18624 121 121 0.58% 0.65%

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 1 162 30944 64.68 2188 2140 445.3
A 0 226 19134 38.16 2188 2140 445.3
A 12 194 16444 32.12 2188 2140 445.3
B 3 64 256707 611.28 2191 2131 416.5
B 4 173 128864 304.31 2191 2131 416.5
B 0 230 77165 180.17 2191 2131 416.5
C 3 233 993548 2010.71 2143 2155 493.1
C 13 61 15499 27.06 2143 2155 493.1
C 14 234 7418 10.67 2143 2155 493.1
D 13 104 407620 806.32 2104 2044 503.0
D 12 110 164079 322.14 2104 2044 503.0
D 13 122 95526 185.85 2104 2044 503.0

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