ASTROSAT CZTI

Data Quality Report

Orbit 44134

Creation date: 2024-06-27T22:59:35.987767
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_012T02_9000005950_44134cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44134cztM0_level2_quad_clean.evt
Size (bytes)773,760,960170,193,600
Size737.9 MB 162.3 MB
Events in quadrant A7,545,5001,118,197
Events in quadrant B5,679,2191,168,504
Events in quadrant C5,099,0501,133,873
Events in quadrant D9,454,605959,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03049118
B02469017
C02349413
D03581672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111465184.647407%
B111434023.607646%
C111461801.614929%
D1113611139.994612%

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 11907 11156 234 234 1.97% 2.10%
B 11908 11154 115 115 0.97% 1.03%
C 11908 11155 33 33 0.28% 0.30%
D 11908 11152 833 833 7.00% 7.47%

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 10 83 2004412 7771.48 1236 1208 257.8
A 14 238 638324 2471.71 1236 1208 257.8
A 15 174 51531 195.23 1236 1208 257.8
B 5 235 378308 1548.42 1233 1195 243.5
B 5 172 254711 1040.93 1233 1195 243.5
B 0 200 82027 331.89 1233 1195 243.5
C 14 254 165158 566.71 1224 1231 289.3
C 15 158 61122 207.05 1224 1231 289.3
C 15 157 35819 119.57 1224 1231 289.3
D 1 47 1409707 4696.65 1183 1143 299.9
D 5 235 1187774 3956.65 1183 1143 299.9
D 1 52 710738 2366.04 1183 1143 299.9

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