ASTROSAT CZTI

Data Quality Report

Orbit 18641

Creation date: 2024-06-27T17:52:51.231664
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/AS1C04_001T01_9000002784_18641cztM0_level2.evt modeM0/AS1C04_001T01_9000002784_18641cztM0_level2_quad_clean.evt
Size (bytes)376,073,28069,511,680
Size358.7 MB 66.3 MB
Events in quadrant A1,888,170477,761
Events in quadrant B5,135,654414,816
Events in quadrant C1,997,391463,812
Events in quadrant D2,090,352460,642

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082250
B0180230
C084120
D089460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407320.049104%
B4074121929.921453%
C4074210.515464%
D4074280.687285%

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 4073 4073 0 0 0.00% 0.00%
B 4074 4074 1011 1011 24.82% 24.82%
C 4074 4074 0 0 0.00% 0.00%
D 4074 4074 22 22 0.54% 0.54%

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 30652 310.57 480 471 97.2
A 13 254 6235 59.31 480 471 97.2
A 0 226 4200 38.37 480 471 97.2
B 10 245 3285057 41123.7 420 409 79.9
B 12 18 70110 872.65 420 409 79.9
B 7 220 40008 495.78 420 409 79.9
C 3 233 99168 910.01 466 469 108.5
C 14 238 74313 680.84 466 469 108.5
C 13 61 3413 27.14 466 469 108.5
D 7 238 165013 1432.4 471 458 114.9
D 10 70 53442 461.21 471 458 114.9
D 13 172 28885 247.45 471 458 114.9

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