ASTROSAT CZTI

Data Quality Report

Orbit 05256

Creation date: 2024-06-27T14:53:12.918404
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/AS1G05_240T02_9000000670_05256cztM0_level2.evt modeM0/AS1G05_240T02_9000000670_05256cztM0_level2_quad_clean.evt
Size (bytes)448,015,68059,114,880
Size427.3 MB 56.4 MB
Events in quadrant A2,874,963358,996
Events in quadrant B2,591,457363,765
Events in quadrant C2,541,327355,892
Events in quadrant D5,190,217329,799

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01122
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01225671
B01135868
C01131379
D019392234

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5455851.558203%
B5453440.806895%
C5449330.605616%
D542276314.072298%

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 6424 5485 36 36 0.56% 0.66%
B 6424 5485 4 4 0.06% 0.07%
C 6424 5485 0 0 0.00% 0.00%
D 6424 5483 566 566 8.81% 10.32%

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 0 50 390388 2947.05 644 629 132.3
A 13 251 6922 47.58 644 629 132.3
A 12 194 6468 44.15 644 629 132.3
B 4 48 39780 311.5 652 637 125.7
B 0 219 17951 137.78 652 637 125.7
B 12 111 11976 90.23 652 637 125.7
C 1 16 59427 395.23 634 638 148.7
C 13 61 5059 29.72 634 638 148.7
C 1 3 4363 25.04 634 638 148.7
D 11 145 2626812 17718.73 597 577 148.2
D 8 195 164028 1102.77 597 577 148.2
D 2 136 75139 503.06 597 577 148.2

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