ASTROSAT CZTI

Data Quality Report

Orbit 45265

Creation date: 2024-06-27T23:11:42.542565
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/AS1A13_024T03_9000006064_45265cztM0_level2.fits modeM0/AS1A13_024T03_9000006064_45265cztM0_level2_quad_clean.evt
Size (bytes)1,567,969,920282,366,720
Size1.5 GB 269.3 MB
Events in quadrant A16,270,6671,888,978
Events in quadrant B9,664,4471,974,515
Events in quadrant C9,149,2911,916,205
Events in quadrant D21,505,4641,473,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0614057
B0414353
C0405473
D0768143

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187909575.093135%
B187936593.506625%
C187934532.410472%
D18793376120.012771%

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 19972 18792 301 301 1.51% 1.60%
B 19973 18793 154 154 0.77% 0.82%
C 19973 18793 111 111 0.56% 0.59%
D 19973 18793 3127 3127 15.66% 16.64%

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 6890199 15660.8 2120 2076 439.8
A 13 248 1092321 2478.78 2120 2076 439.8
A 0 243 47226 102.65 2120 2076 439.8
B 4 171 374779 890.17 2131 2069 418.7
B 3 96 209293 494.93 2131 2069 418.7
B 5 172 124100 291.46 2131 2069 418.7
C 14 254 582500 1169.2 2112 2123 496.4
C 15 208 92851 182.78 2112 2123 496.4
C 12 2 76564 149.96 2112 2123 496.4
D 13 249 5922867 12193.96 1949 1889 485.6
D 11 241 1918736 3947.65 1949 1889 485.6
D 5 222 1371978 2821.63 1949 1889 485.6

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