ASTROSAT CZTI

Data Quality Report

Orbit 00148

Creation date: 2024-06-27T13:57:01.705950
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_140T01_9000000004_00148cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00148cztM0_level2_quad_clean.evt
Size (bytes)944,455,68045,941,760
Size900.7 MB 43.8 MB
Events in quadrant A7,272,157250,025
Events in quadrant B7,134,192254,486
Events in quadrant C6,240,620248,923
Events in quadrant D7,576,229236,828

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256872
B0253101
C0226091
D0265561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5727300.523834%
B5727230.401606%
C572710.017461%
D57271302.269949%

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 7319 5729 257 257 3.51% 4.49%
B 7319 5729 197 197 2.69% 3.44%
C 7319 5729 39 39 0.53% 0.68%
D 7319 5729 468 468 6.39% 8.17%

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 86 228821 798.23 1751 1708 284.5
A 13 17 139565 484.52 1751 1708 284.5
A 13 146 46770 158.38 1751 1708 284.5
B 10 199 208385 528.2 1733 1736 391.2
B 8 236 139298 351.61 1733 1736 391.2
B 5 216 41387 101.35 1733 1736 391.2
C 14 252 44182 97.31 1559 1617 437.4
C 10 17 39869 87.45 1559 1617 437.4
C 0 188 13895 28.07 1559 1617 437.4
D 7 53 283217 743.62 1655 1635 378.7
D 14 53 138972 362.69 1655 1635 378.7
D 0 243 132562 345.76 1655 1635 378.7

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