ASTROSAT CZTI

Data Quality Report

Orbit 16814

Creation date: 2024-06-27T17:28:08.391925
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_140T01_9000002496_16814cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16814cztM0_level2_quad_clean.evt
Size (bytes)798,747,840141,563,520
Size761.7 MB 135.0 MB
Events in quadrant A4,888,559908,680
Events in quadrant B5,758,252919,105
Events in quadrant C5,863,730880,092
Events in quadrant D6,971,968855,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216543
B0240012
C0242852
D0277502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10458610.583286%
B104582001.912412%
C104581461.396060%
D104584274.082999%

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 11314 10461 9 9 0.08% 0.09%
B 11314 10461 49 49 0.43% 0.47%
C 11314 10461 4 4 0.04% 0.04%
D 11314 10461 307 307 2.71% 2.93%

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 114322 449.24 1234 1204 251.8
A 9 143 29248 111.37 1234 1204 251.8
A 0 226 10943 38.68 1234 1204 251.8
B 15 35 430364 1817.83 1234 1202 236.1
B 0 229 140627 590.57 1234 1202 236.1
B 0 189 105963 443.74 1234 1202 236.1
C 3 233 840713 3019.22 1186 1195 278.1
C 0 207 199169 711.99 1186 1195 278.1
C 14 238 179123 639.89 1186 1195 278.1
D 1 52 1857999 6373.93 1190 1154 291.3
D 12 218 415118 1421.0 1190 1154 291.3
D 13 248 55031 184.94 1190 1154 291.3

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