ASTROSAT CZTI

Data Quality Report

Orbit 16856

Creation date: 2024-06-27T17:28:41.007142
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/AS1A05_056T01_9000002498_16856cztM0_level2.evt modeM0/AS1A05_056T01_9000002498_16856cztM0_level2_quad_clean.evt
Size (bytes)1,368,506,880233,801,280
Size1.3 GB 223.0 MB
Events in quadrant A12,758,3551,455,444
Events in quadrant B9,365,2801,499,089
Events in quadrant C8,918,7101,414,562
Events in quadrant D9,119,8281,403,688

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0504425
B0400134
C0389424
D0406964

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189977604.000632%
B189971770.931726%
C189971470.773806%
D18997710.373743%

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 21223 19002 563 563 2.65% 2.96%
B 21223 19002 33 33 0.16% 0.17%
C 21223 19002 0 0 0.00% 0.00%
D 21223 19002 34 34 0.16% 0.18%

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 0 23 3866867 8565.61 2251 2204 451.2
A 0 226 245346 538.9 2251 2204 451.2
A 9 143 23366 46.9 2251 2204 451.2
B 10 16 255144 582.78 2271 2210 434.0
B 15 35 85361 191.58 2271 2210 434.0
B 0 229 79457 177.98 2271 2210 434.0
C 14 238 334289 650.09 2186 2202 510.8
C 3 233 36021 66.2 2186 2202 510.8
C 0 207 30014 54.44 2186 2202 510.8
D 1 52 341487 631.57 2204 2144 537.3
D 5 222 333132 616.02 2204 2144 537.3
D 15 145 103488 188.62 2204 2144 537.3

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