ASTROSAT CZTI

Data Quality Report

Orbit 20151006_P01_003T01_9000000002_level2

Creation date: 2023-01-06T17:37:27.358211
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/AS1P01_003T01_9000000002cztM0_level2.fits modeM0/AS1P01_003T01_9000000002cztM0_level2_quad_clean.evt
Size (bytes)7,692,635,520612,889,920
Size7.2 GB 584.5 MB
Events in quadrant A70,345,6403,717,640
Events in quadrant B70,205,7813,789,719
Events in quadrant C66,479,0933,717,057
Events in quadrant D73,607,1393,604,539

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011200
B011220
C011180
D011160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02478760
B02474760
C02364260
D02577400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546517051.290004%
B544493000.550974%
C546515931.085067%
D5398012042.230456%

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 84498 54764 3233 3233 3.83% 5.90%
B 84498 54586 2394 2394 2.83% 4.39%
C 84498 54772 2838 2838 3.36% 5.18%
D 84498 54122 5164 5164 6.11% 9.54%

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 15 127 3037527 1097.88 16972 16599 2751.6
A 13 174 183818 60.77 16972 16599 2751.6
A 13 65 174291 57.31 16972 16599 2751.6
B 0 235 1913498 535.03 16907 16870 3544.9
B 8 5 742859 204.8 16907 16870 3544.9
B 8 236 532362 145.42 16907 16870 3544.9
C 8 224 3024654 692.41 15401 15941 4345.3
C 9 204 1758432 401.01 15401 15941 4345.3
C 0 203 338672 74.27 15401 15941 4345.3
D 10 244 2448650 587.47 15965 16053 4140.8
D 12 207 1762157 421.69 15965 16053 4140.8
D 13 207 818904 193.89 15965 16053 4140.8

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