ASTROSAT CZTI

Data Quality Report

Orbit 38327

Creation date: 2024-06-27T21:51:18.559848
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/AS1A10_094T24_9000005374_38327cztM0_level2.fits modeM0/AS1A10_094T24_9000005374_38327cztM0_level2_quad_clean.evt
Size (bytes)1,441,350,720231,255,360
Size1.3 GB 220.5 MB
Events in quadrant A7,907,5461,673,138
Events in quadrant B7,929,9431,701,301
Events in quadrant C7,623,2321,664,368
Events in quadrant D28,688,368887,858

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0326913
B0338573
C0321653
D0958733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15580320.205392%
B155801440.924262%
C15580440.282413%
D15580746847.933248%

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 19637 15583 15 15 0.08% 0.10%
B 19637 15583 78 78 0.40% 0.50%
C 19637 15583 40 40 0.20% 0.26%
D 19637 15583 7351 7351 37.43% 47.17%

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 10 83 957048 2752.85 1725 1690 347.0
A 12 189 95694 270.87 1725 1690 347.0
A 9 143 80148 226.08 1725 1690 347.0
B 0 183 517001 1575.43 1716 1669 327.1
B 0 229 300914 914.83 1716 1669 327.1
B 5 184 126301 381.01 1716 1669 327.1
C 15 214 654376 1670.46 1689 1697 390.7
C 5 250 249095 633.19 1689 1697 390.7
C 1 23 34660 84.36 1689 1697 390.7
D 10 203 14925036 41723.44 1465 1421 357.7
D 2 16 5526382 15446.68 1465 1421 357.7
D 12 235 1495299 4176.58 1465 1421 357.7

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