ASTROSAT CZTI

Data Quality Report

Orbit 26776

Creation date: 2024-06-27T19:32:47.145594
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/AS1A07_027T01_9000003862_26776cztM0_level2.evt modeM0/AS1A07_027T01_9000003862_26776cztM0_level2_quad_clean.evt
Size (bytes)797,794,56097,585,920
Size760.8 MB 93.1 MB
Events in quadrant A4,646,153659,186
Events in quadrant B9,046,693571,832
Events in quadrant C3,429,710669,323
Events in quadrant D6,612,895613,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181510
B0309210
C0139700
D0239990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313751.188025%
B6314269142.619576%
C6314761.203674%
D631375011.880247%

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 7538 6314 28 28 0.37% 0.44%
B 7539 6315 2403 2403 31.87% 38.05%
C 7539 6315 3 3 0.04% 0.05%
D 7538 6314 628 628 8.33% 9.95%

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 1473612 9047.35 816 801 162.8
A 12 96 21929 129.79 816 801 162.8
A 13 254 10457 59.32 816 801 162.8
B 0 189 6304675 48493.01 698 683 130.0
B 12 111 15412 113.3 698 683 130.0
B 0 190 13811 100.99 698 683 130.0
C 14 238 129709 679.4 816 822 189.7
C 2 16 101091 528.55 816 822 189.7
C 7 235 11520 56.39 816 822 189.7
D 7 80 3090267 16783.93 785 768 184.1
D 15 21 300328 1627.38 785 768 184.1
D 1 52 193437 1046.69 785 768 184.1

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