ASTROSAT CZTI

Data Quality Report

Orbit 18391

Creation date: 2024-06-27T17:49:13.693922
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/AS1A05_094T01_9000002726_18391cztM0_level2.evt modeM0/AS1A05_094T01_9000002726_18391cztM0_level2_quad_clean.evt
Size (bytes)1,157,728,320247,838,400
Size1.1 GB 236.4 MB
Events in quadrant A8,129,9151,620,012
Events in quadrant B8,491,5441,628,350
Events in quadrant C8,186,0031,544,573
Events in quadrant D9,069,9791,507,251

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360063
B0366543
C0357523
D0386934

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175051730.988289%
B175061961.119616%
C175062091.193876%
D175051971.125393%

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 19550 17508 2 2 0.01% 0.01%
B 19551 17509 20 20 0.10% 0.11%
C 19551 17509 0 0 0.00% 0.00%
D 19550 17507 51 51 0.26% 0.29%

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 15 174 101750 237.84 2080 2036 419.2
A 4 2 25435 55.81 2080 2036 419.2
A 0 226 18200 38.55 2080 2036 419.2
B 10 245 68336 169.5 2075 2024 391.2
B 3 64 68277 169.35 2075 2024 391.2
B 0 183 51660 126.88 2075 2024 391.2
C 14 238 306151 650.0 1993 2006 467.9
C 3 233 80733 168.25 1993 2006 467.9
C 13 61 14219 26.1 1993 2006 467.9
D 1 52 1072363 2192.77 2016 1958 488.2
D 2 152 136652 275.93 2016 1958 488.2
D 2 234 80093 160.06 2016 1958 488.2

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