ASTROSAT CZTI

Data Quality Report

Orbit 23581

Creation date: 2024-06-27T18:56:24.419540
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_011T01_9000003482_23581cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23581cztM0_level2_quad_clean.evt
Size (bytes)520,473,60099,835,200
Size496.4 MB 95.2 MB
Events in quadrant A3,176,422659,431
Events in quadrant B3,401,662669,563
Events in quadrant C3,541,527624,754
Events in quadrant D5,195,342609,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135262
B0141852
C0145602
D0198842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6597500.757920%
B6597610.924663%
C65971652.501137%
D65975498.321965%

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 7742 6597 0 0 0.00% 0.00%
B 7742 6598 5 5 0.06% 0.08%
C 7742 6598 94 94 1.21% 1.42%
D 7742 6597 453 453 5.85% 6.87%

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 11695 66.71 822 807 163.2
A 0 226 7128 38.73 822 807 163.2
A 3 137 6890 37.27 822 807 163.2
B 0 189 107366 694.2 813 794 153.5
B 0 230 43341 277.15 813 794 153.5
B 12 111 18211 113.45 813 794 153.5
C 0 10 393873 2245.78 763 768 175.0
C 14 238 124414 706.38 763 768 175.0
C 10 9 39347 220.4 763 768 175.0
D 12 233 908275 4858.28 766 741 186.8
D 1 52 800965 4283.82 766 741 186.8
D 7 223 325318 1737.55 766 741 186.8

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