ASTROSAT CZTI

Data Quality Report

Orbit 33853

Creation date: 2024-06-27T20:53:23.320794
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_065T11_9000004830_33853cztM0_level2.evt modeM0/AS1A11_065T11_9000004830_33853cztM0_level2_quad_clean.evt
Size (bytes)510,477,12069,952,320
Size486.8 MB 66.7 MB
Events in quadrant A2,704,417452,582
Events in quadrant B3,855,836431,500
Events in quadrant C3,096,339444,921
Events in quadrant D5,430,806404,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111513
B0148612
C0123142
D0199242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A549430.054605%
B54944117.480888%
C5494651.183109%
D54945039.155442%

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 7197 5495 0 0 0.00% 0.00%
B 7197 5495 321 321 4.46% 5.84%
C 7197 5495 53 53 0.74% 0.96%
D 7197 5495 446 446 6.20% 8.12%

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 15 169 109092 816.74 665 652 132.8
A 13 6 15152 109.21 665 652 132.8
A 10 83 11033 78.19 665 652 132.8
B 5 172 1239240 10305.92 630 615 120.2
B 0 190 64700 533.22 630 615 120.2
B 5 255 34754 284.05 630 615 120.2
C 15 214 239166 1627.44 634 640 146.6
C 14 254 190524 1295.56 634 640 146.6
C 0 10 110481 749.43 634 640 146.6
D 2 250 1068503 7082.06 620 603 150.8
D 8 195 931736 6175.05 620 603 150.8
D 13 249 307522 2035.41 620 603 150.8

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