ASTROSAT CZTI

Data Quality Report

Orbit 13876

Creation date: 2024-06-27T16:47:15.594445
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/AS1A04_115T02_9000002042_13876cztM0_level2.evt modeM0/AS1A04_115T02_9000002042_13876cztM0_level2_quad_clean.evt
Size (bytes)1,026,792,000187,660,800
Size979.2 MB 179.0 MB
Events in quadrant A6,943,4891,171,824
Events in quadrant B7,350,8621,178,670
Events in quadrant C6,895,5871,162,516
Events in quadrant D8,881,0581,125,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308222
B0312212
C0308422
D0364682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151571881.240351%
B151572161.425084%
C151571370.903873%
D151573182.098041%

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 16078 15158 0 0 0.00% 0.00%
B 16078 15158 10 10 0.06% 0.07%
C 16078 15158 7 7 0.04% 0.05%
D 16078 15158 167 167 1.04% 1.10%

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 23 38067 99.7 1785 1740 364.4
A 1 162 21692 54.76 1785 1740 364.4
A 0 226 17797 44.07 1785 1740 364.4
B 10 244 308256 902.05 1769 1723 339.8
B 0 214 60072 171.71 1769 1723 339.8
B 4 80 59831 171.0 1769 1723 339.8
C 3 233 93254 225.22 1736 1745 406.3
C 14 234 23143 52.66 1736 1745 406.3
C 13 61 12324 26.04 1736 1745 406.3
D 5 222 1757858 4295.27 1720 1678 408.9
D 13 189 238628 579.53 1720 1678 408.9
D 1 52 117651 283.65 1720 1678 408.9

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