ASTROSAT CZTI

Data Quality Report

Orbit 41855

Creation date: 2024-06-27T22:33:40.508797
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/AS1C07_001T11_9000005710_41855cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41855cztM0_level2_quad_clean.evt
Size (bytes)364,573,44090,417,600
Size347.7 MB 86.2 MB
Events in quadrant A3,635,365601,875
Events in quadrant B2,587,133621,052
Events in quadrant C3,682,322575,416
Events in quadrant D3,154,966547,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143398
B0117852
C0144242
D0134652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55931572.807080%
B5594260.464784%
C55942734.880229%
D55941442.574187%

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 7176 5595 135 135 1.88% 2.41%
B 7176 5595 8 8 0.11% 0.14%
C 7176 5595 272 272 3.79% 4.86%
D 7176 5595 114 114 1.59% 2.04%

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 14 24 728023 5981.65 589 574 121.6
A 10 83 606849 4985.26 589 574 121.6
A 2 79 20592 164.6 589 574 121.6
B 3 112 95949 852.66 590 575 111.9
B 0 229 34272 301.26 590 575 111.9
B 0 156 33069 290.5 590 575 111.9
C 0 10 1262140 9558.03 563 567 132.0
C 15 214 218535 1651.39 563 567 132.0
C 15 111 4579 30.4 563 567 132.0
D 13 249 534129 3754.83 581 566 142.1
D 2 249 109256 764.88 581 566 142.1
D 5 222 75913 530.24 581 566 142.1

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