ASTROSAT CZTI

Data Quality Report

Orbit 31647

Creation date: 2024-06-27T20:31:24.137345
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/AS1T04_026T01_9000004624_31647cztM0_level2.evt modeM0/AS1T04_026T01_9000004624_31647cztM0_level2_quad_clean.evt
Size (bytes)200,545,92020,865,600
Size191.3 MB 19.9 MB
Events in quadrant A1,517,093125,359
Events in quadrant B1,590,347119,499
Events in quadrant C1,122,890124,943
Events in quadrant D1,712,836123,485

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057781
B061461
C045821
D064161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188338820.605417%
B188337319.808816%
C188227514.612115%
D188221711.530287%

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 1903 1884 125 125 6.57% 6.63%
B 1903 1884 8 8 0.42% 0.42%
C 1902 1883 0 0 0.00% 0.00%
D 1902 1883 1 1 0.05% 0.05%

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 0 13 486120 8414.83 266 259 57.7
A 13 254 3570 57.34 266 259 57.7
A 3 137 3178 50.56 266 259 57.7
B 6 159 514351 9104.45 260 252 56.5
B 10 245 22771 398.8 260 252 56.5
B 0 190 21513 376.52 260 252 56.5
C 0 10 55374 842.08 259 261 65.4
C 14 238 39533 600.04 259 261 65.4
C 2 114 4916 71.12 259 261 65.4
D 8 195 680313 10039.29 264 255 67.7
D 11 176 33479 490.47 264 255 67.7
D 2 234 8495 121.64 264 255 67.7

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