ASTROSAT CZTI

Data Quality Report

Orbit 47762

Creation date: 2024-07-28T08:33:47.429145
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/AS1C09_004T04_9000006346_47762cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47762cztM0_level2_quad_clean.evt
Size (bytes)472,999,680109,552,320
Size451.1 MB 104.5 MB
Events in quadrant A7,084,192714,175
Events in quadrant B3,628,134739,073
Events in quadrant C2,989,800720,975
Events in quadrant D3,276,639666,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255492
B0157062
C0140872
D0147742

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68322393.498244%
B6832731.068501%
C6831300.439174%
D6831490.717318%

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 7827 6833 76 76 0.97% 1.11%
B 7827 6833 27 27 0.34% 0.40%
C 7826 6832 7 7 0.09% 0.10%
D 7826 6832 32 32 0.41% 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 10 83 4177151 27413.33 735 719 152.4
A 9 191 24666 157.18 735 719 152.4
A 14 248 16911 106.28 735 719 152.4
B 0 186 343666 2363.76 739 716 145.1
B 5 255 98863 676.47 739 716 145.1
B 0 200 92492 632.56 739 716 145.1
C 12 2 93124 530.82 733 735 174.0
C 14 254 24394 135.93 733 735 174.0
C 3 110 7018 36.1 733 735 174.0
D 7 67 238843 1298.37 729 706 183.4
D 5 171 45321 243.25 729 706 183.4
D 4 222 40609 217.56 729 706 183.4

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