ASTROSAT CZTI

Data Quality Report

Orbit 12100

Creation date: 2024-06-27T16:22:24.213144
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_065T01_9000001796_12100cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12100cztM0_level2_quad_clean.evt
Size (bytes)585,463,68083,332,800
Size558.3 MB 79.5 MB
Events in quadrant A3,564,486541,866
Events in quadrant B4,682,488518,633
Events in quadrant C3,247,950534,941
Events in quadrant D5,812,343490,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148573
B0182152
C0135952
D0217002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62631091.740380%
B62634587.312789%
C6263671.069775%
D62635749.164937%

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 7614 6264 5 5 0.07% 0.08%
B 7613 6263 212 212 2.78% 3.38%
C 7614 6264 1 1 0.01% 0.02%
D 7614 6264 450 450 5.91% 7.18%

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 63 75374 444.5 846 832 167.7
A 13 251 70100 413.05 846 832 167.7
A 1 162 50324 295.12 846 832 167.7
B 4 239 1148580 7591.85 821 805 151.2
B 11 51 134074 881.5 821 805 151.2
B 15 204 99683 654.02 821 805 151.2
C 5 252 10554 51.94 828 834 187.1
C 14 234 6364 29.55 828 834 187.1
C 13 61 6301 29.21 828 834 187.1
D 1 52 2019103 10673.61 802 783 189.1
D 8 195 420811 2221.26 802 783 189.1
D 14 34 123008 646.37 802 783 189.1

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