ASTROSAT CZTI

Data Quality Report

Orbit 35509

Creation date: 2022-04-23T08:49:27.842470
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/AS1A11_097T07_9000005084_35509cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35509cztM0_level2_quad_clean.evt
Size (bytes)392,463,36054,109,440
Size374.3 MB 51.6 MB
Events in quadrant A2,450,994332,383
Events in quadrant B2,469,544343,238
Events in quadrant C3,447,739311,070
Events in quadrant D3,186,576309,842

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101403
B0102152
C0132452
D0126432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486450.102796%
B486470.143914%
C48642324.769737%
D48641643.371711%

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 7018 4865 0 0 0.00% 0.00%
B 7018 4865 2 2 0.03% 0.04%
C 7018 4865 169 169 2.41% 3.47%
D 7018 4865 144 144 2.05% 2.96%

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 125180 1042.54 596 586 119.5
A 15 169 15006 120.66 596 586 119.5
A 13 254 6505 49.52 596 586 119.5
B 5 236 76124 664.55 596 582 113.7
B 5 172 16921 143.74 596 582 113.7
B 12 111 13817 116.43 596 582 113.7
C 0 10 779620 5939.78 565 571 131.2
C 0 207 209896 1595.98 565 571 131.2
C 15 214 199511 1516.8 565 571 131.2
D 7 80 460203 3283.23 567 554 140.0
D 12 6 332016 2367.6 567 554 140.0
D 13 249 79107 561.1 567 554 140.0

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