ASTROSAT CZTI

Data Quality Report

Orbit 16906

Creation date: 2024-06-27T17:29:20.206928
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_004T03_9000002508_16906cztM0_level2.evt modeM0/AS1A05_004T03_9000002508_16906cztM0_level2_quad_clean.evt
Size (bytes)518,448,96070,214,400
Size494.4 MB 67.0 MB
Events in quadrant A4,218,626428,460
Events in quadrant B3,447,443440,204
Events in quadrant C3,709,776412,235
Events in quadrant D3,897,177403,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164082
B0139682
C0150632
D0155712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63192393.782244%
B63191071.693306%
C63191261.993986%
D6319751.186897%

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 7615 6321 109 109 1.43% 1.72%
B 7615 6321 1 1 0.01% 0.02%
C 7615 6321 9 9 0.12% 0.14%
D 7615 6321 20 20 0.26% 0.32%

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 15 174 919206 5419.99 849 833 169.4
A 9 143 21854 124.06 849 833 169.4
A 12 189 15215 84.88 849 833 169.4
B 15 35 69608 430.85 854 835 159.6
B 0 189 24623 149.03 854 835 159.6
B 12 111 18391 109.99 854 835 159.6
C 3 233 408396 2209.82 802 811 184.4
C 14 238 127227 685.39 802 811 184.4
C 14 225 40611 215.79 802 811 184.4
D 12 235 660797 3373.58 814 791 195.6
D 1 52 90317 457.61 814 791 195.6
D 7 38 31293 155.91 814 791 195.6

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