ASTROSAT CZTI

Data Quality Report

Orbit 45201

Creation date: 2024-06-27T23:10:32.470328
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/AS1A13_049T06_9000006054_45201cztM0_level2.fits modeM0/AS1A13_049T06_9000006054_45201cztM0_level2_quad_clean.evt
Size (bytes)629,340,480107,311,680
Size600.2 MB 102.3 MB
Events in quadrant A5,606,249740,165
Events in quadrant B4,700,051754,153
Events in quadrant C3,852,575746,832
Events in quadrant D8,604,049528,927

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216351
B0185341
C0161781
D0302582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68822373.443766%
B68824075.913978%
C68831902.760424%
D6882183226.620169%

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 7677 6883 9 9 0.12% 0.13%
B 7677 6882 163 163 2.12% 2.37%
C 7678 6883 81 81 1.05% 1.18%
D 7676 6882 1689 1689 22.00% 24.54%

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 2537071 15575.5 781 763 162.8
A 10 248 17535 103.0 781 763 162.8
A 2 79 15393 89.84 781 763 162.8
B 4 170 972479 6364.38 776 751 152.7
B 3 112 478929 3131.85 776 751 152.7
B 0 183 50296 324.5 776 751 152.7
C 12 2 512428 2805.0 780 784 182.4
C 3 233 231188 1263.15 780 784 182.4
C 2 14 40319 216.74 780 784 182.4
D 12 238 4275781 25009.22 675 653 170.9
D 13 249 635263 3712.43 675 653 170.9
D 1 52 381335 2226.97 675 653 170.9

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