ASTROSAT CZTI

Data Quality Report

Orbit 05520

Creation date: 2024-06-27T14:56:14.234005
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/AS1G06_168T23_9000000706_05520cztM0_level2.evt modeM0/AS1G06_168T23_9000000706_05520cztM0_level2_quad_clean.evt
Size (bytes)638,000,64077,633,280
Size608.4 MB 74.0 MB
Events in quadrant A4,025,300458,159
Events in quadrant B6,440,952429,997
Events in quadrant C4,064,146446,689
Events in quadrant D4,228,378438,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01785617
B0248058
C0178376
D0185907

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83122673.212223%
B83137058.480693%
C83131421.708168%
D83131621.948755%

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 8750 8317 29 29 0.33% 0.35%
B 8750 8317 247 247 2.82% 2.97%
C 8750 8317 2 2 0.02% 0.02%
D 8750 8317 15 15 0.17% 0.18%

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 133014 634.98 1001 975 207.9
A 7 16 18691 85.2 1001 975 207.9
A 13 6 10473 45.68 1001 975 207.9
B 15 255 1698346 8772.56 982 958 193.5
B 15 204 523405 2700.15 982 958 193.5
B 10 16 171307 880.41 982 958 193.5
C 9 247 155613 671.9 976 979 230.1
C 1 241 37582 159.04 976 979 230.1
C 8 208 27097 113.48 976 979 230.1
D 11 192 126680 517.95 974 942 242.8
D 2 152 118098 482.6 974 942 242.8
D 2 63 96255 392.62 974 942 242.8

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