ASTROSAT CZTI

Data Quality Report

Orbit 00565

Creation date: 2024-06-27T14:00:00.735584
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_014T06_9000000078_00565cztM0_level2.evt modeM0/AS1P01_014T06_9000000078_00565cztM0_level2_quad_clean.evt
Size (bytes)787,029,12049,864,320
Size750.6 MB 47.6 MB
Events in quadrant A6,207,558291,981
Events in quadrant B6,135,402299,124
Events in quadrant C5,425,533290,171
Events in quadrant D5,734,547278,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219733
B0218002
C0196512
D0205862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499250.100160%
B499240.080128%
C499220.040064%
D4992140.280449%

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 7147 4993 124 124 1.73% 2.48%
B 7147 4993 80 80 1.12% 1.60%
C 7147 4993 29 29 0.41% 0.58%
D 7147 4993 99 99 1.39% 1.98%

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 0 238 64422 183.89 1558 1547 341.9
A 15 143 50008 141.74 1558 1547 341.9
A 0 69 35425 99.08 1558 1547 341.9
B 4 250 82697 223.65 1545 1558 362.8
B 8 4 21803 55.8 1545 1558 362.8
B 4 235 20576 52.42 1545 1558 362.8
C 15 241 13189 31.05 1371 1420 379.0
C 3 159 10454 23.83 1371 1420 379.0
C 5 249 10037 22.73 1371 1420 379.0
D 13 221 142046 332.37 1352 1401 423.2
D 1 4 118032 275.62 1352 1401 423.2
D 13 216 80522 186.98 1352 1401 423.2

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