ASTROSAT CZTI

Data Quality Report

Orbit 37539

Creation date: 2024-06-27T21:41:15.986473
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/AS1A10_113T02_9000005332_37539cztM0_level2.evt modeM0/AS1A10_113T02_9000005332_37539cztM0_level2_quad_clean.evt
Size (bytes)435,614,40067,564,800
Size415.4 MB 64.4 MB
Events in quadrant A3,428,088420,196
Events in quadrant B2,835,794421,389
Events in quadrant C2,788,797415,158
Events in quadrant D3,754,486392,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136183
B0120022
C0116452
D0150502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5664430.759181%
B5664380.670904%
C5664140.247175%
D56642494.396186%

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 9070 5666 16 16 0.18% 0.28%
B 9070 5666 27 27 0.30% 0.48%
C 9070 5666 8 8 0.09% 0.14%
D 9070 5666 243 243 2.68% 4.29%

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 15 222 471157 3625.86 644 631 129.8
A 10 83 319884 2460.15 644 631 129.8
A 12 189 39388 298.66 644 631 129.8
B 5 172 93062 743.13 642 625 124.4
B 5 255 61537 489.69 642 625 124.4
B 0 219 33587 264.99 642 625 124.4
C 15 214 245929 1651.15 630 633 148.6
C 0 10 48730 323.75 630 633 148.6
C 14 254 16609 107.54 630 633 148.6
D 2 249 314558 2072.19 619 602 151.5
D 12 233 268288 1766.8 619 602 151.5
D 10 253 194515 1279.88 619 602 151.5

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