ASTROSAT CZTI

Data Quality Report

Orbit 04674

Creation date: 2024-06-27T14:45:28.012023
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/AS1G05_215T01_9000000586_04674cztM0_level2.evt modeM0/AS1G05_215T01_9000000586_04674cztM0_level2_quad_clean.evt
Size (bytes)195,868,80037,376,640
Size186.8 MB 35.6 MB
Events in quadrant A997,278255,031
Events in quadrant B1,081,625260,099
Events in quadrant C1,014,221253,618
Events in quadrant D2,695,324211,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043741
B046291
C043951
D094421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A207930.144300%
B207970.336700%
C207970.336700%
D207951024.531025%

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 2079 2079 0 0 0.00% 0.00%
B 2079 2079 0 0 0.00% 0.00%
C 2079 2079 0 0 0.00% 0.00%
D 2079 2079 398 398 19.14% 19.14%

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 8 15 2633 44.36 257 252 53.7
A 12 194 2481 41.53 257 252 53.7
A 0 226 2434 40.65 257 252 53.7
B 15 204 41181 816.46 262 256 50.1
B 0 219 13267 259.57 262 256 50.1
B 4 80 11851 231.32 262 256 50.1
C 7 236 2734 40.52 259 260 61.1
C 13 61 1978 28.14 259 260 61.1
C 4 112 1552 21.16 259 260 61.1
D 2 63 864911 15350.18 231 224 56.3
D 8 112 836024 14837.37 231 224 56.3
D 2 234 63261 1119.05 231 224 56.3

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