ASTROSAT CZTI

Data Quality Report

Orbit 19346

Creation date: 2024-06-27T18:01:39.342122
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_204T01_9000002856_19346cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19346cztM0_level2_quad_clean.evt
Size (bytes)1,677,841,920214,698,240
Size1.6 GB 204.8 MB
Events in quadrant A9,842,6231,334,961
Events in quadrant B9,094,7011,389,985
Events in quadrant C8,995,9291,334,465
Events in quadrant D21,613,9781,148,067

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416454
B0390474
C0387384
D0770684

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187866093.241776%
B187862281.213670%
C187862371.261578%
D18786400821.335037%

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 20801 18790 434 434 2.09% 2.31%
B 20801 18789 14 14 0.07% 0.07%
C 20801 18790 3 3 0.01% 0.02%
D 20801 18790 3633 3633 17.47% 19.33%

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 11 29 1108815 2491.52 2207 2155 444.2
A 15 174 224190 499.89 2207 2155 444.2
A 0 226 19216 38.41 2207 2155 444.2
B 7 220 86760 197.0 2235 2174 429.4
B 0 230 69338 156.43 2235 2174 429.4
B 0 198 54378 121.58 2235 2174 429.4
C 14 238 335734 661.23 2158 2172 504.5
C 3 233 205831 403.72 2158 2172 504.5
C 9 160 27489 50.19 2158 2172 504.5
D 7 238 8194726 17024.62 1991 1935 481.2
D 1 52 2103760 4367.59 1991 1935 481.2
D 11 176 1715121 3560.0 1991 1935 481.2

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