ASTROSAT CZTI

Data Quality Report

Orbit 24906

Creation date: 2024-06-27T19:11:17.286733
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/AS1A08_003T15_9000003648_24906cztM0_level2.evt modeM0/AS1A08_003T15_9000003648_24906cztM0_level2_quad_clean.evt
Size (bytes)490,135,68092,050,560
Size467.4 MB 87.8 MB
Events in quadrant A3,190,948594,350
Events in quadrant B3,310,678605,626
Events in quadrant C3,248,053573,107
Events in quadrant D4,644,672552,720

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137972
B0140492
C0138742
D0184252

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6617560.846305%
B6617660.997431%
C66171041.571709%
D66161582.388150%

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 7607 6618 1 1 0.01% 0.02%
B 7607 6618 4 4 0.05% 0.06%
C 7607 6618 0 0 0.00% 0.00%
D 7606 6617 99 99 1.30% 1.50%

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 6 16 19177 109.94 822 805 167.1
A 13 254 10685 59.12 822 805 167.1
A 3 137 7837 42.08 822 805 167.1
B 4 80 51872 323.4 817 795 157.9
B 0 189 25442 156.05 817 795 157.9
B 12 111 19525 118.59 817 795 157.9
C 14 238 126757 677.97 789 794 185.8
C 5 112 26676 139.3 789 794 185.8
C 7 247 18329 94.38 789 794 185.8
D 1 52 1318254 6840.05 793 770 192.6
D 8 195 295393 1529.61 793 770 192.6
D 2 234 26162 131.83 793 770 192.6

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