ASTROSAT CZTI

Data Quality Report

Orbit 00644

Creation date: 2024-06-27T14:01:07.786168
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/AS1P01_127T01_9000000090_00644cztM0_level2.evt modeM0/AS1P01_127T01_9000000090_00644cztM0_level2_quad_clean.evt
Size (bytes)1,259,631,360112,685,760
Size1.2 GB 107.5 MB
Events in quadrant A9,281,625725,867
Events in quadrant B9,205,001721,277
Events in quadrant C8,589,293723,446
Events in quadrant D10,537,268681,300

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0441
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01757
B01735
C01746
D01735

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0347641445
B0347271635
C0325891346
D0387301676

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8061120.148865%
B8057350.434405%
C805630.037239%
D80563264.046673%

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 12905 8073 180 180 1.39% 2.23%
B 12905 8072 149 149 1.15% 1.85%
C 12907 8076 52 52 0.40% 0.64%
D 12907 8072 751 751 5.82% 9.30%

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 14 79 70843 132.22 2344 2316 518.3
A 0 238 49972 91.95 2344 2316 518.3
A 12 133 35561 64.15 2344 2316 518.3
B 7 221 127506 230.16 2316 2332 543.9
B 5 249 80471 143.67 2316 2332 543.9
B 0 230 37303 64.3 2316 2332 543.9
C 15 241 30825 46.9 2172 2256 609.2
C 10 17 14395 19.93 2172 2256 609.2
C 9 52 13930 19.16 2172 2256 609.2
D 1 4 736263 1139.34 2066 2154 644.3
D 13 216 382316 590.01 2066 2154 644.3
D 13 221 342915 528.86 2066 2154 644.3

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