ASTROSAT CZTI

Data Quality Report

Orbit 36913

Creation date: 2024-06-27T21:33:09.990651
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_010T01_9000005246_36913cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36913cztM0_level2_quad_clean.evt
Size (bytes)303,073,92063,028,800
Size289.0 MB 60.1 MB
Events in quadrant A2,733,908525,221
Events in quadrant B733,5627,017
Events in quadrant C2,723,117529,498
Events in quadrant D2,649,713501,842

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111753
B049252
C0108362
D0111342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4887801.636996%
B48874887100.000000%
C4887741.514221%
D4887831.698383%

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 7010 4888 60 60 0.86% 1.23%
B 7009 4886 0 0 0.00% 0.00%
C 7010 4888 58 58 0.83% 1.19%
D 7010 4888 67 67 0.96% 1.37%

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 9 143 263267 2281.87 578 567 115.1
A 10 83 210465 1823.22 578 567 115.1
A 13 6 13164 109.42 578 567 115.1
B 12 243 679505 193183.45 9 9 3.5
B 12 144 12483 3546.41 9 9 3.5
B 5 255 1479 417.93 9 9 3.5
C 0 10 235459 1768.76 578 585 132.8
C 15 214 210552 1581.2 578 585 132.8
C 0 207 14742 106.61 578 585 132.8
D 13 171 276238 1977.84 572 559 139.4
D 2 153 66235 471.19 572 559 139.4
D 13 249 48969 347.31 572 559 139.4

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