ASTROSAT CZTI

Data Quality Report

Orbit 14888

Creation date: 2024-06-27T17:00:56.963405
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/AS1T02_054T01_9000002200_14888cztM0_level2.evt modeM0/AS1T02_054T01_9000002200_14888cztM0_level2_quad_clean.evt
Size (bytes)500,875,200111,830,400
Size477.7 MB 106.6 MB
Events in quadrant A3,386,461727,470
Events in quadrant B3,879,047724,749
Events in quadrant C3,432,747727,386
Events in quadrant D3,981,947706,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148120
B0162430
C0146180
D0169600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7194520.722825%
B71951492.070883%
C7195510.708826%
D71951772.460042%

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 8699 7196 4 4 0.05% 0.06%
B 8700 7197 57 57 0.66% 0.79%
C 8700 7197 0 0 0.00% 0.00%
D 8700 7197 81 81 0.93% 1.13%

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 12 189 102968 594.39 844 824 171.8
A 3 1 17577 97.49 844 824 171.8
A 15 69 11426 61.69 844 824 171.8
B 3 64 213731 1334.56 841 820 159.5
B 3 209 173095 1079.85 841 820 159.5
B 0 230 53275 328.8 841 820 159.5
C 3 233 202499 1051.78 827 830 191.7
C 13 61 6038 27.16 827 830 191.7
C 3 232 4440 18.83 827 830 191.7
D 7 254 813630 4176.07 814 795 194.6
D 2 234 25117 124.96 814 795 194.6
D 10 70 23433 116.3 814 795 194.6

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