ASTROSAT CZTI

Data Quality Report

Orbit 08925

Creation date: 2024-06-27T15:39:02.952645
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/AS1A03_092T01_9000001240_08925cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08925cztM0_level2_quad_clean.evt
Size (bytes)2,760,526,080505,368,000
Size2.6 GB 482.0 MB
Events in quadrant A21,259,1563,161,860
Events in quadrant B19,319,3623,187,763
Events in quadrant C17,910,8883,108,434
Events in quadrant D22,347,7123,036,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08380
B08380
C08380
D08380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0899379
B0850738
C0830968
D0951008

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A409504331.057387%
B409502400.586081%
C409501190.290598%
D409504391.072039%

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 44965 40958 183 183 0.41% 0.45%
B 44965 40958 14 14 0.03% 0.03%
C 44965 40959 0 0 0.00% 0.00%
D 44965 40959 298 298 0.66% 0.73%

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 5 2177559 2267.89 4736 4636 958.1
A 15 174 590249 611.21 4736 4636 958.1
A 5 16 207928 212.18 4736 4636 958.1
B 0 214 248573 271.22 4765 4655 899.3
B 10 16 116503 124.37 4765 4655 899.3
B 12 111 96372 101.98 4765 4655 899.3
C 13 61 34601 28.45 4575 4586 1054.8
C 9 68 26189 20.48 4575 4586 1054.8
C 14 234 18033 12.75 4575 4586 1054.8
D 12 233 1422974 1191.38 4555 4442 1190.7
D 1 52 1162611 972.71 4555 4442 1190.7
D 8 195 1008243 843.06 4555 4442 1190.7

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