ASTROSAT CZTI

Data Quality Report

Orbit 17225

Creation date: 2024-06-27T17:33:47.973374
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/AS1A05_185T04_9000002548_17225cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17225cztM0_level2_quad_clean.evt
Size (bytes)447,079,68092,845,440
Size426.4 MB 88.5 MB
Events in quadrant A3,041,540610,171
Events in quadrant B3,185,489616,509
Events in quadrant C3,609,267576,786
Events in quadrant D3,278,534571,616

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130362
B0134272
C0147822
D0139552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6252370.591811%
B6252370.591811%
C62521031.647473%
D6251881.407775%

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 7557 6253 0 0 0.00% 0.00%
B 7557 6253 1 1 0.01% 0.02%
C 7557 6253 0 0 0.00% 0.00%
D 7556 6252 42 42 0.56% 0.67%

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 0 226 7519 42.76 789 773 157.7
A 0 23 6484 36.2 789 773 157.7
A 12 194 5817 31.97 789 773 157.7
B 0 189 23699 155.32 791 770 147.6
B 0 219 22203 145.19 791 770 147.6
B 0 198 20826 135.86 791 770 147.6
C 3 233 529687 2979.09 759 763 177.5
C 14 238 117855 659.51 759 763 177.5
C 13 61 5480 26.57 759 763 177.5
D 10 70 158543 849.11 768 746 185.8
D 1 52 90666 483.86 768 746 185.8
D 13 189 56202 298.41 768 746 185.8

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