ASTROSAT CZTI

Data Quality Report

Orbit 31451

Creation date: 2024-06-27T20:28:39.967758
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/AS1T04_029T01_9000004582_31451cztM0_level2.evt modeM0/AS1T04_029T01_9000004582_31451cztM0_level2_quad_clean.evt
Size (bytes)524,315,52091,607,040
Size500.0 MB 87.4 MB
Events in quadrant A3,103,686593,588
Events in quadrant B5,003,047600,717
Events in quadrant C3,493,870568,255
Events in quadrant D3,840,012560,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134393
B0195072
C0145422
D0158602

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6465410.634184%
B6465821.268368%
C64652083.217324%
D6465901.392111%

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 7536 6465 0 0 0.00% 0.00%
B 7536 6465 1 1 0.01% 0.02%
C 7536 6465 48 48 0.64% 0.74%
D 7536 6465 43 43 0.57% 0.67%

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 0 230 12362 72.34 801 786 160.0
A 13 254 11205 65.11 801 786 160.0
A 3 137 8188 46.25 801 786 160.0
B 6 159 1840558 12046.83 795 776 152.7
B 12 111 18941 118.94 795 776 152.7
B 11 111 17507 109.55 795 776 152.7
C 0 10 217330 1195.85 768 774 181.1
C 14 238 133795 734.56 768 774 181.1
C 10 22 89480 489.85 768 774 181.1
D 8 195 630145 3413.81 776 759 184.4
D 12 218 101195 544.77 776 759 184.4
D 2 250 60226 322.55 776 759 184.4

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