ASTROSAT CZTI

Data Quality Report

Orbit 46996

Creation date: 2024-06-27T23:30:30.124349
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/AS1C09_006T01_9000006294_46996cztM0_level2.fits modeM0/AS1C09_006T01_9000006294_46996cztM0_level2_quad_clean.evt
Size (bytes)725,325,12098,176,320
Size691.7 MB 93.6 MB
Events in quadrant A6,331,356741,057
Events in quadrant B12,222,006401,471
Events in quadrant C3,386,106727,745
Events in quadrant D4,411,604653,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233931
B0407362
C0143391
D0174631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64302614.059098%
B6430375758.429238%
C64301442.239502%
D64303305.132193%

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 7565 6431 4 4 0.05% 0.06%
B 7565 6430 3127 3127 41.34% 48.63%
C 7565 6430 68 68 0.90% 1.06%
D 7565 6430 203 203 2.68% 3.16%

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 3310143 20842.45 767 753 158.8
A 9 191 25944 158.65 767 753 158.8
A 13 6 19719 119.45 767 753 158.8
B 3 112 9610468 78422.06 626 609 122.5
B 4 171 36187 290.34 626 609 122.5
B 5 171 31488 251.99 626 609 122.5
C 14 254 247794 1398.49 750 753 176.6
C 12 2 88407 496.21 750 753 176.6
C 1 3 53998 301.42 750 753 176.6
D 13 249 786505 4236.82 745 723 185.5
D 1 52 403331 2170.8 745 723 185.5
D 12 233 195753 1051.57 745 723 185.5

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