ASTROSAT CZTI

Data Quality Report

Orbit 17759

Creation date: 2024-06-27T17:40:35.141934
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/AS1T03_070T08_9000002646_17759cztM0_level2.evt modeM0/AS1T03_070T08_9000002646_17759cztM0_level2_quad_clean.evt
Size (bytes)469,100,16098,426,880
Size447.4 MB 93.9 MB
Events in quadrant A3,124,791645,864
Events in quadrant B3,337,691669,393
Events in quadrant C3,987,089616,108
Events in quadrant D3,328,819609,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132752
B0139392
C0158862
D0141462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6313671.061302%
B6314961.520431%
C63143154.988914%
D63131201.900840%

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 8883 6315 0 0 0.00% 0.00%
B 8884 6316 0 0 0.00% 0.00%
C 8884 6316 109 109 1.23% 1.73%
D 8883 6315 38 38 0.43% 0.60%

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 0 226 7077 39.0 810 795 161.1
A 15 174 6117 33.04 810 795 161.1
A 12 194 6006 32.35 810 795 161.1
B 0 229 58542 374.0 820 801 154.4
B 0 219 24843 155.73 820 801 154.4
B 0 230 24363 152.62 820 801 154.4
C 4 254 666896 3644.29 779 787 182.8
C 14 238 120990 657.63 779 787 182.8
C 3 233 79805 432.31 779 787 182.8
D 7 238 209761 1034.43 781 766 202.0
D 1 52 74368 364.3 781 766 202.0
D 5 222 35052 169.7 781 766 202.0

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