ASTROSAT CZTI

Data Quality Report

Orbit 14397

Creation date: 2024-06-27T16:54:34.812910
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/AS1G08_066T04_9000002122_14397cztM0_level2.evt modeM0/AS1G08_066T04_9000002122_14397cztM0_level2_quad_clean.evt
Size (bytes)497,033,280104,221,440
Size474.0 MB 99.4 MB
Events in quadrant A3,286,846682,806
Events in quadrant B3,500,465692,038
Events in quadrant C4,246,681654,884
Events in quadrant D3,552,059647,644

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142143
B0149492
C0171692
D0152032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6875520.756364%
B6875891.294545%
C6875400.581818%
D6875610.887273%

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 8851 6877 2 2 0.02% 0.03%
B 8851 6877 6 6 0.07% 0.09%
C 8851 6877 1 1 0.01% 0.01%
D 8851 6876 32 32 0.36% 0.47%

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 8 15 24740 142.04 835 815 168.4
A 12 189 16369 92.34 835 815 168.4
A 15 157 15006 84.25 835 815 168.4
B 0 189 75799 468.99 838 817 159.9
B 4 142 72387 447.65 838 817 159.9
B 4 173 22938 138.36 838 817 159.9
C 3 233 1089535 5847.27 808 813 186.2
C 13 61 5627 25.85 808 813 186.2
C 14 234 5039 22.7 808 813 186.2
D 2 120 204588 1055.34 804 783 193.1
D 12 227 114839 590.6 804 783 193.1
D 10 199 43572 221.57 804 783 193.1

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