ASTROSAT CZTI

Data Quality Report

Orbit 37316

Creation date: 2024-06-27T21:38:21.259490
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_030T02_9000005310_37316cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37316cztM0_level2_quad_clean.evt
Size (bytes)388,097,28075,640,320
Size370.1 MB 72.1 MB
Events in quadrant A2,836,710483,024
Events in quadrant B2,625,097503,913
Events in quadrant C2,687,659489,979
Events in quadrant D3,257,036456,042

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115743
B0109712
C0109002
D0130882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5100661.294118%
B5100671.313725%
C5100240.470588%
D51001863.647059%

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 7013 5101 49 49 0.70% 0.96%
B 7013 5101 40 40 0.57% 0.78%
C 7013 5101 18 18 0.26% 0.35%
D 7013 5101 152 152 2.17% 2.98%

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 263128 2173.67 603 592 120.8
A 15 237 125546 1034.56 603 592 120.8
A 13 248 52055 426.09 603 592 120.8
B 5 172 190725 1659.86 604 589 114.5
B 4 141 21774 184.94 604 589 114.5
B 0 213 17714 149.5 604 589 114.5
C 15 214 214923 1534.21 599 607 139.7
C 0 10 99504 707.97 599 607 139.7
C 1 23 22067 153.62 599 607 139.7
D 2 249 349867 2432.44 590 576 143.6
D 13 249 244498 1698.66 590 576 143.6
D 13 171 198638 1379.29 590 576 143.6

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