ASTROSAT CZTI

Data Quality Report

Orbit 40903

Creation date: 2024-06-27T22:21:59.648942
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/AS1A12_102T01_9000005576_40903cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40903cztM0_level2_quad_clean.evt
Size (bytes)622,514,880169,568,640
Size593.7 MB 161.7 MB
Events in quadrant A5,591,3411,134,213
Events in quadrant B5,893,1861,141,187
Events in quadrant C4,999,6081,108,903
Events in quadrant D5,723,0701,003,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228334
B0250433
C0218423
D0246153

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10773130.120672%
B107732852.645503%
C10773220.204214%
D107731841.707974%

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 13579 10775 4 4 0.03% 0.04%
B 13579 10775 232 232 1.71% 2.15%
C 13579 10775 15 15 0.11% 0.14%
D 13579 10775 143 143 1.05% 1.33%

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 10 83 967200 4063.29 1166 1139 237.8
A 12 189 56896 234.52 1166 1139 237.8
A 6 10 29637 119.86 1166 1139 237.8
B 5 32 636392 2894.39 1146 1115 219.5
B 4 171 319831 1452.11 1146 1115 219.5
B 0 190 183009 828.73 1146 1115 219.5
C 15 214 457696 1728.17 1136 1142 264.2
C 0 10 73556 274.11 1136 1142 264.2
C 10 70 17955 63.64 1136 1142 264.2
D 12 128 312274 1133.03 1130 1101 274.6
D 12 79 228064 826.41 1130 1101 274.6
D 12 233 175518 635.08 1130 1101 274.6

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