ASTROSAT CZTI

Data Quality Report

Orbit 00977

Creation date: 2024-06-27T14:05:36.921257
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_998T01_9000000188_00977cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00977cztM0_level2_quad_clean.evt
Size (bytes)1,144,667,520108,086,400
Size1.1 GB 103.1 MB
Events in quadrant A8,528,409700,491
Events in quadrant B9,162,951701,183
Events in quadrant C8,746,545687,026
Events in quadrant D7,744,853677,086

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305080
B0324020
C0311800
D0282100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A729260.082282%
B7291140.192018%
C7291270.370320%
D729180.109724%

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 7902 7294 158 158 2.00% 2.17%
B 7901 7293 263 263 3.33% 3.61%
C 7901 7293 210 210 2.66% 2.88%
D 7901 7293 86 86 1.09% 1.18%

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 14 170 21435 35.99 2211 2227 533.7
A 11 242 13332 20.81 2211 2227 533.7
A 11 79 10429 15.37 2211 2227 533.7
B 0 220 82072 144.78 2331 2347 550.7
B 15 22 71006 124.68 2331 2347 550.7
B 5 249 70459 123.69 2331 2347 550.7
C 15 241 347275 589.65 2100 2171 585.3
C 9 52 81055 134.78 2100 2171 585.3
C 7 159 33496 53.52 2100 2171 585.3
D 1 4 151358 238.21 2011 2081 626.7
D 13 170 28824 42.68 2011 2081 626.7
D 13 73 19611 27.97 2011 2081 626.7

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