ASTROSAT CZTI

Data Quality Report

Orbit 40813

Creation date: 2024-06-27T22:20:51.167906
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/AS1A12_099T03_9000005570_40813cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40813cztM0_level2_quad_clean.evt
Size (bytes)344,753,28094,792,320
Size328.8 MB 90.4 MB
Events in quadrant A3,364,103625,289
Events in quadrant B2,752,066654,770
Events in quadrant C2,790,250626,155
Events in quadrant D3,400,249556,148

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134273
B0121832
C0119212
D0143392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58391111.901010%
B5839280.479534%
C5839290.496660%
D58391973.373865%

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 7183 5840 95 95 1.32% 1.63%
B 7183 5840 19 19 0.26% 0.33%
C 7183 5840 19 19 0.26% 0.33%
D 7183 5840 186 186 2.59% 3.18%

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 548236 4177.05 639 626 131.1
A 6 10 255751 1946.04 639 626 131.1
A 2 79 39914 299.68 639 626 131.1
B 7 202 71066 558.8 639 621 126.1
B 0 190 64266 504.86 639 621 126.1
B 5 255 51278 401.84 639 621 126.1
C 15 214 253574 1726.38 626 629 146.5
C 0 10 71911 486.51 626 629 146.5
C 3 233 7409 46.27 626 629 146.5
D 2 249 425237 2786.62 619 601 152.4
D 12 233 314854 2062.24 619 601 152.4
D 2 153 131150 856.71 619 601 152.4

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