ASTROSAT CZTI

Data Quality Report

Orbit 19746

Creation date: 2024-06-27T18:06:27.687881
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/AS1C04_001T01_9000002948_19746cztM0_level2.evt modeM0/AS1C04_001T01_9000002948_19746cztM0_level2_quad_clean.evt
Size (bytes)524,689,920108,803,520
Size500.4 MB 103.8 MB
Events in quadrant A2,791,490734,030
Events in quadrant B2,908,004751,548
Events in quadrant C6,736,727668,020
Events in quadrant D3,032,908708,116

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125942
B0128711
C0243021
D0134921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6204590.950999%
B6205871.402095%
C6205121219.532635%
D6205500.805802%

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 6924 6205 0 0 0.00% 0.00%
B 6925 6206 2 2 0.03% 0.03%
C 6925 6206 729 729 10.53% 11.75%
D 6925 6206 33 33 0.48% 0.53%

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 11 29 34094 233.45 716 701 143.0
A 0 226 6192 38.39 716 701 143.0
A 3 137 5605 34.28 716 701 143.0
B 0 197 34384 247.73 719 699 136.0
B 7 220 25733 184.11 719 699 136.0
B 12 111 16294 114.69 719 699 136.0
C 3 233 4026883 26585.47 654 658 151.4
C 14 238 104030 682.57 654 658 151.4
C 7 247 52176 340.18 654 658 151.4
D 1 52 314044 1878.69 694 672 166.8
D 5 32 28959 169.58 694 672 166.8
D 2 234 26787 156.56 694 672 166.8

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