ASTROSAT CZTI

Data Quality Report

Orbit 28731

Creation date: 2024-06-27T19:55:32.254886
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/AS1A10_123T07_9000004124_28731cztM0_level2.evt modeM0/AS1A10_123T07_9000004124_28731cztM0_level2_quad_clean.evt
Size (bytes)1,282,276,800240,220,800
Size1.2 GB 229.1 MB
Events in quadrant A8,222,8121,555,717
Events in quadrant B8,357,1571,589,774
Events in quadrant C8,211,4171,512,813
Events in quadrant D12,905,2371,456,451

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350933
B0354293
C0349863
D0499423

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03440
B03440
C03440
D03440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168351100.653401%
B168351480.879121%
C168352311.372141%
D168368675.149679%

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 20320 16835 6 6 0.03% 0.04%
B 20320 16835 14 14 0.07% 0.08%
C 20320 16835 0 0 0.00% 0.00%
D 20321 16836 669 669 3.29% 3.97%

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 84782 199.35 2101 2061 414.9
A 13 254 31435 70.79 2101 2061 414.9
A 3 137 19708 42.53 2101 2061 414.9
B 4 80 174449 445.12 2077 2026 387.4
B 12 111 47259 116.77 2077 2026 387.4
B 11 111 42880 105.47 2077 2026 387.4
C 14 238 355992 771.4 1995 2012 458.9
C 14 254 46100 96.08 1995 2012 458.9
C 3 233 40368 83.59 1995 2012 458.9
D 1 52 2658777 5691.73 1982 1930 466.8
D 8 195 2055981 4400.36 1982 1930 466.8
D 5 222 406194 866.05 1982 1930 466.8

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