ASTROSAT CZTI

Data Quality Report

Orbit 22724

Creation date: 2024-06-27T18:44:51.290309
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/AS1A08_007T01_9000003362_22724cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22724cztM0_level2_quad_clean.evt
Size (bytes)435,260,16098,156,160
Size415.1 MB 93.6 MB
Events in quadrant A3,058,398657,040
Events in quadrant B3,194,437661,605
Events in quadrant C3,113,350631,013
Events in quadrant D3,426,700622,629

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125421
B0128951
C0127861
D0137581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5729701.221854%
B5730961.675393%
C57301051.832461%
D57301121.954625%

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 7019 5730 0 0 0.00% 0.00%
B 7020 5731 24 24 0.34% 0.42%
C 7020 5731 0 0 0.00% 0.00%
D 7020 5731 47 47 0.67% 0.82%

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 13 254 9805 57.77 792 778 156.3
A 0 226 7149 40.77 792 778 156.3
A 12 194 5849 32.45 792 778 156.3
B 0 245 67822 470.49 777 762 142.5
B 0 228 57656 399.17 777 762 142.5
B 0 190 21650 146.55 777 762 142.5
C 14 238 121116 695.13 760 766 173.1
C 10 22 18910 104.8 760 766 173.1
C 0 207 10679 57.25 760 766 173.1
D 12 233 130025 695.77 778 757 185.8
D 1 52 105027 561.22 778 757 185.8
D 9 85 87243 465.5 778 757 185.8

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