ASTROSAT CZTI

Data Quality Report

Orbit 01277

Creation date: 2024-06-27T14:10:15.917008
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/AS1G04_011T02_9000000226_01277cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01277cztM0_level2_quad_clean.evt
Size (bytes)1,682,084,160101,721,600
Size1.6 GB 97.0 MB
Events in quadrant A9,226,871713,056
Events in quadrant B11,071,707708,352
Events in quadrant C9,261,822708,130
Events in quadrant D20,906,106444,513

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325713
B0380622
C0327012
D0680572

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72312142.959480%
B72313424.729636%
C72311652.281842%
D7231536874.235929%

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 7266 7233 563 563 7.75% 7.78%
B 7266 7232 1228 1228 16.90% 16.98%
C 7266 7233 548 548 7.54% 7.58%
D 7265 7231 6791 6791 93.48% 93.92%

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 12 243 86245 145.35 2376 2382 577.0
A 8 14 11079 15.07 2376 2382 577.0
A 11 79 10038 13.27 2376 2382 577.0
B 8 4 1289587 2204.16 2431 2426 584.0
B 12 52 213073 360.72 2431 2426 584.0
B 15 22 157140 264.94 2431 2426 584.0
C 15 241 355264 563.22 2226 2295 626.7
C 8 208 113710 177.78 2226 2295 626.7
C 3 79 54759 83.71 2226 2295 626.7
D 13 169 14096645 28732.28 1568 1615 490.6
D 10 84 766913 1560.04 1568 1615 490.6
D 13 205 70379 140.17 1568 1615 490.6

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