ASTROSAT CZTI

Data Quality Report

Orbit 13189

Creation date: 2024-06-27T16:37:51.623217
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/AS1T02_012T08_9000001960_13189cztM0_level2.evt modeM0/AS1T02_012T08_9000001960_13189cztM0_level2_quad_clean.evt
Size (bytes)176,846,40016,738,560
Size168.7 MB 16.0 MB
Events in quadrant A1,144,73385,965
Events in quadrant B1,375,34587,306
Events in quadrant C1,116,78287,363
Events in quadrant D1,563,22782,349

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048352
B055061
C047691
D061061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22541185.235138%
B22542089.228039%
C2254833.682343%
D22541345.944987%

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 2785 2257 0 0 0.00% 0.00%
B 2785 2257 51 51 1.83% 2.26%
C 2785 2257 0 0 0.00% 0.00%
D 2785 2257 31 31 1.11% 1.37%

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 4 2 13656 223.54 286 278 59.8
A 12 189 12850 210.08 286 278 59.8
A 8 15 8106 130.8 286 278 59.8
B 4 239 270746 4936.33 273 266 54.8
B 3 64 10573 188.11 273 266 54.8
B 0 219 8996 159.32 273 266 54.8
C 15 208 6696 94.99 284 285 67.5
C 13 61 2105 26.97 284 285 67.5
C 8 222 770 7.19 284 285 67.5
D 13 122 464262 6737.04 277 268 68.9
D 1 52 31635 455.44 277 268 68.9
D 2 234 7538 105.56 277 268 68.9

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