ASTROSAT CZTI

Data Quality Report

Orbit 11522

Creation date: 2024-06-27T16:14:10.719641
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/AS1A04_021T06_9000001688_11522cztM0_level2.evt modeM0/AS1A04_021T06_9000001688_11522cztM0_level2_quad_clean.evt
Size (bytes)247,285,44040,625,280
Size235.8 MB 38.7 MB
Events in quadrant A2,623,297248,661
Events in quadrant B1,940,815266,698
Events in quadrant C1,173,928279,812
Events in quadrant D1,589,611265,036

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094651
B073641
C048571
D062561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A235741817.734408%
B23571616.830717%
C235710.042427%
D2357371.569792%

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 2358 2358 280 280 11.87% 11.87%
B 2358 2358 106 106 4.50% 4.50%
C 2358 2358 0 0 0.00% 0.00%
D 2358 2358 25 25 1.06% 1.06%

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 1408218 23397.77 294 289 60.2
A 1 162 22518 369.41 294 289 60.2
A 9 143 17963 293.72 294 289 60.2
B 4 239 405448 6951.13 302 296 58.3
B 3 64 238410 4085.29 302 296 58.3
B 11 51 37179 632.8 302 296 58.3
C 7 87 4337 58.14 299 301 69.4
C 13 61 2197 27.31 299 301 69.4
C 14 234 1179 12.65 299 301 69.4
D 6 219 125889 1717.53 304 297 73.1
D 5 222 83777 1141.63 304 297 73.1
D 8 195 71494 973.65 304 297 73.1

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