ASTROSAT CZTI

Data Quality Report

Orbit 14972

Creation date: 2024-06-27T17:02:00.096614
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/AS1T02_056T01_9000002210_14972cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14972cztM0_level2_quad_clean.evt
Size (bytes)535,697,280105,197,760
Size510.9 MB 100.3 MB
Events in quadrant A4,007,171676,133
Events in quadrant B3,994,615677,249
Events in quadrant C3,666,201665,691
Events in quadrant D4,045,738643,928

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166682
B0168151
C0156201
D0172331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7514730.971520%
B75141381.836572%
C7514270.359329%
D75141652.195901%

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 7935 7516 3 3 0.04% 0.04%
B 7935 7516 42 42 0.53% 0.56%
C 7935 7516 0 0 0.00% 0.00%
D 7935 7516 128 128 1.61% 1.70%

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 1 162 160634 862.59 900 879 185.2
A 12 189 111776 598.78 900 879 185.2
A 1 178 78192 417.45 900 879 185.2
B 3 64 193447 1130.41 894 869 170.4
B 7 220 94944 552.21 894 869 170.4
B 0 229 34790 199.11 894 869 170.4
C 3 233 206395 1013.23 871 874 202.8
C 7 247 30887 147.97 871 874 202.8
C 14 234 14527 67.31 871 874 202.8
D 15 0 296841 1296.59 864 844 228.3
D 7 38 265809 1160.66 864 844 228.3
D 1 3 47112 202.67 864 844 228.3

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