ASTROSAT CZTI

Data Quality Report

Orbit 36689

Creation date: 2024-06-27T21:30:17.982480
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/AS1T05_041T01_9000005234_36689cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36689cztM0_level2_quad_clean.evt
Size (bytes)1,245,790,080275,155,200
Size1.2 GB 262.4 MB
Events in quadrant A7,251,3981,875,384
Events in quadrant B8,462,1561,868,485
Events in quadrant C10,391,1441,791,796
Events in quadrant D10,588,2231,739,834

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0317264
B0350383
C0404543
D0420473

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15336330.215180%
B153362191.428013%
C1533610686.964006%
D153368505.542514%

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 19515 15339 18 18 0.09% 0.12%
B 19515 15339 138 138 0.71% 0.90%
C 19515 15339 928 928 4.76% 6.05%
D 19515 15339 654 654 3.35% 4.26%

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 478877 1388.85 1713 1678 343.6
A 9 143 106353 304.65 1713 1678 343.6
A 13 6 36159 100.35 1713 1678 343.6
B 5 255 730765 2271.38 1699 1652 321.0
B 0 189 658423 2046.01 1699 1652 321.0
B 4 232 96609 295.82 1699 1652 321.0
C 1 23 2646329 7057.27 1627 1640 374.7
C 15 214 661911 1761.91 1627 1640 374.7
C 0 10 501905 1334.94 1627 1640 374.7
D 12 233 944756 2365.52 1634 1581 398.7
D 2 249 881531 2206.95 1634 1581 398.7
D 13 249 729433 1825.48 1634 1581 398.7

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