ASTROSAT CZTI

Data Quality Report

Orbit 49772

Creation date: 2024-12-11T08:35:32.330148
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/AS1A13_037T01_9000006440_49772cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49772cztM0_level2_quad_clean.evt
Size (bytes)1,499,178,24056,802,240
Size1.4 GB 54.2 MB
Events in quadrant A18,374,060335,116
Events in quadrant B5,388,494743,205
Events in quadrant C15,104,05960,844
Events in quadrant D16,051,47650,350

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0597260
B0210260
C0499920
D0528640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7476664788.911182%
B74762873.838951%
C74767476100.000000%
D74757475100.000000%

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 7476 7476 6406 6406 85.69% 85.69%
B 7476 7476 183 183 2.45% 2.45%
C 7475 7475 3938 3938 52.68% 52.68%
D 7474 7474 4692 4692 62.78% 62.78%

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 0 98 8632832 70985.77 400 386 121.6
A 12 50 3263548 26833.42 400 386 121.6
A 4 205 730587 6004.54 400 386 121.6
B 5 172 468021 2828.0 776 751 165.2
B 0 229 276533 1669.08 776 751 165.2
B 5 185 176938 1066.31 776 751 165.2
C 15 197 3734957 77446.0 87 83 48.2
C 15 174 2250954 46673.85 87 83 48.2
C 15 214 1757446 36440.52 87 83 48.2
D 8 129 4815240 85818.78 83 75 56.1
D 15 142 3717056 66246.28 83 75 56.1
D 15 168 1919501 34209.17 83 75 56.1

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