ASTROSAT CZTI

Data Quality Report

Orbit 15642

Creation date: 2024-06-27T17:11:31.586594
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/AS1T02_086T01_9000002316_15642cztM0_level2.evt modeM0/AS1T02_086T01_9000002316_15642cztM0_level2_quad_clean.evt
Size (bytes)453,052,80093,015,360
Size432.1 MB 88.7 MB
Events in quadrant A3,422,920590,965
Events in quadrant B3,206,832604,817
Events in quadrant C3,255,221587,126
Events in quadrant D3,385,805572,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145313
B0137992
C0137132
D0146712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6624741.117150%
B6624410.618961%
C6624520.785024%
D6624781.177536%

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 7655 6625 38 38 0.50% 0.57%
B 7655 6625 0 0 0.00% 0.00%
C 7655 6625 0 0 0.00% 0.00%
D 7655 6625 61 61 0.80% 0.92%

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 15 157 387207 2440.26 783 768 158.4
A 3 80 17317 104.5 783 768 158.4
A 0 226 6966 39.14 783 768 158.4
B 0 189 46001 300.54 791 773 150.5
B 12 111 17401 110.49 791 773 150.5
B 3 209 16399 103.84 791 773 150.5
C 3 233 144711 819.63 757 764 175.6
C 14 238 117566 665.07 757 764 175.6
C 0 207 26933 149.01 757 764 175.6
D 1 52 269488 1463.28 759 737 183.7
D 2 16 113708 615.1 759 737 183.7
D 2 234 25754 136.21 759 737 183.7

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