ASTROSAT CZTI

Data Quality Report

Orbit 34495

Creation date: 2022-02-13T21:23:56.218128
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_156T01_9000004928_34495cztM0_level2.evt modeM0/AS1A05_156T01_9000004928_34495cztM0_level2_quad_clean.evt
Size (bytes)496,946,88057,847,680
Size473.9 MB 55.2 MB
Events in quadrant A2,845,247355,719
Events in quadrant B4,046,088353,257
Events in quadrant C3,016,125352,393
Events in quadrant D4,794,304329,678

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115813
B0152972
C0120652
D0178892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5139100.194590%
B51394839.398716%
C5139400.778362%
D51393136.090679%

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 7262 5140 3 3 0.04% 0.06%
B 7262 5140 335 335 4.61% 6.52%
C 7262 5140 30 30 0.41% 0.58%
D 7262 5140 281 281 3.87% 5.47%

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 15 169 78531 571.7 683 672 136.2
A 9 143 55384 401.73 683 672 136.2
A 10 83 38914 280.8 683 672 136.2
B 5 172 1314450 10958.53 647 634 119.9
B 0 189 67596 558.53 647 634 119.9
B 3 112 39489 324.09 647 634 119.9
C 15 214 220269 1455.14 662 670 150.9
C 0 10 144803 955.08 662 670 150.9
C 14 67 44986 293.65 662 670 150.9
D 8 195 1305725 8310.66 650 630 157.0
D 7 223 494121 3142.48 650 630 157.0
D 2 250 217839 1383.16 650 630 157.0

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