ASTROSAT CZTI

Data Quality Report

Orbit 40834

Creation date: 2024-06-27T22:21:05.975719
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_104T02_9000005572_40834cztM0_level2.fits modeM0/AS1A12_104T02_9000005572_40834cztM0_level2_quad_clean.evt
Size (bytes)319,239,36089,144,640
Size304.5 MB 85.0 MB
Events in quadrant A2,900,946600,253
Events in quadrant B2,603,899609,685
Events in quadrant C2,601,530583,283
Events in quadrant D3,292,445530,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120403
B0115232
C0111792
D0134282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5367240.447177%
B5367551.024781%
C5367270.503074%
D53671863.465623%

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 7100 5368 11 11 0.15% 0.20%
B 7100 5368 29 29 0.41% 0.54%
C 7100 5368 19 19 0.27% 0.35%
D 7100 5368 154 154 2.17% 2.87%

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 514070 4171.36 589 576 123.1
A 2 79 53865 432.89 589 576 123.1
A 13 248 25519 202.62 589 576 123.1
B 7 202 201920 1778.05 584 567 113.2
B 0 190 63297 553.94 584 567 113.2
B 0 230 25919 223.87 584 567 113.2
C 15 214 226151 1682.38 574 578 134.1
C 0 10 89786 665.33 574 578 134.1
C 14 254 33624 246.46 574 578 134.1
D 1 47 311162 2207.68 569 552 140.7
D 2 249 253341 1796.71 569 552 140.7
D 13 249 228130 1617.52 569 552 140.7

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