ASTROSAT CZTI

Data Quality Report

Orbit 21800

Creation date: 2024-06-27T18:32:23.668267
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_006T02_9000003228_21800cztM0_level2.evt modeM0/AS1A07_006T02_9000003228_21800cztM0_level2_quad_clean.evt
Size (bytes)465,920,64076,348,800
Size444.3 MB 72.8 MB
Events in quadrant A3,378,067468,478
Events in quadrant B3,436,021483,357
Events in quadrant C3,280,696463,507
Events in quadrant D3,570,254439,275

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140232
B0140492
C0135462
D0148492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6559180.274432%
B6559390.594603%
C6559440.670834%
D65591021.555115%

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 7829 6560 2 2 0.03% 0.03%
B 7829 6560 13 13 0.17% 0.20%
C 7829 6560 0 0 0.00% 0.00%
D 7829 6560 65 65 0.83% 0.99%

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 6 16 169020 1011.49 830 815 166.3
A 13 254 12239 68.7 830 815 166.3
A 0 226 7271 38.82 830 815 166.3
B 3 64 75844 476.81 841 822 157.3
B 12 111 18096 109.79 841 822 157.3
B 11 111 15911 95.9 841 822 157.3
C 14 238 127983 677.55 806 813 187.7
C 13 61 5649 25.77 806 813 187.7
C 0 10 4441 19.33 806 813 187.7
D 1 52 204502 1039.16 802 781 196.0
D 13 153 153064 776.78 802 781 196.0
D 13 104 66347 334.45 802 781 196.0

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