ASTROSAT CZTI

Data Quality Report

Orbit 28735

Creation date: 2024-06-27T19:55:36.080232
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_28735cztM0_level2.evt modeM0/AS1A10_123T07_9000004124_28735cztM0_level2_quad_clean.evt
Size (bytes)677,511,36077,610,240
Size646.1 MB 74.0 MB
Events in quadrant A5,863,488469,342
Events in quadrant B4,918,084481,236
Events in quadrant C3,317,674472,368
Events in quadrant D5,969,617463,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215051
B0188361
C0136941
D0223566

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A665689413.431490%
B66574636.955085%
C66571462.193180%
D66563855.784255%

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 7616 6656 757 757 9.94% 11.37%
B 7617 6657 283 283 3.72% 4.25%
C 7617 6657 0 0 0.00% 0.00%
D 7616 6656 340 340 4.46% 5.11%

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 14 239 2713101 16601.22 811 792 163.4
A 13 254 11972 68.43 811 792 163.4
A 5 98 11220 63.83 811 792 163.4
B 5 255 1625988 10363.76 823 804 156.8
B 4 80 21973 134.99 823 804 156.8
B 12 111 18361 111.96 823 804 156.8
C 14 238 142730 762.04 809 816 186.2
C 14 254 14660 74.34 809 816 186.2
C 13 61 5584 25.6 809 816 186.2
D 8 195 1468084 7568.29 816 795 193.9
D 1 52 906104 4669.59 816 795 193.9
D 12 233 351190 1807.34 816 795 193.9

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