ASTROSAT CZTI

Data Quality Report

Orbit 24175

Creation date: 2024-06-27T19:03:06.625646
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/AS1A07_067T01_9000003578_24175cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24175cztM0_level2_quad_clean.evt
Size (bytes)782,948,16073,814,400
Size746.7 MB 70.4 MB
Events in quadrant A3,198,104484,474
Events in quadrant B3,223,899490,467
Events in quadrant C3,610,918465,988
Events in quadrant D13,239,406340,062

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133131
B0133561
C0145651
D0438021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6496911.400862%
B64961081.662562%
C64952123.264049%
D6496395160.822044%

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 7421 6496 0 0 0.00% 0.00%
B 7421 6497 1 1 0.01% 0.02%
C 7420 6495 67 67 0.90% 1.03%
D 7420 6495 3614 3614 48.71% 55.64%

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 13 254 10000 54.79 830 811 167.7
A 0 226 7264 38.47 830 811 167.7
A 3 137 7122 37.63 830 811 167.7
B 12 111 18365 112.78 817 796 155.8
B 11 111 16333 99.73 817 796 155.8
B 14 111 14290 86.62 817 796 155.8
C 0 239 423949 2341.94 780 786 180.7
C 14 238 124138 682.68 780 786 180.7
C 2 16 14418 75.44 780 786 180.7
D 7 238 8174251 55487.98 602 585 147.3
D 1 52 1648932 11190.02 602 585 147.3
D 12 218 582658 3951.48 602 585 147.3

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