ASTROSAT CZTI

Data Quality Report

Orbit 14873

Creation date: 2024-06-27T17:00:47.294398
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/AS1G08_044T01_9000002196_14873cztM0_level2.evt modeM0/AS1G08_044T01_9000002196_14873cztM0_level2_quad_clean.evt
Size (bytes)270,429,12057,576,960
Size257.9 MB 54.9 MB
Events in quadrant A1,779,969382,265
Events in quadrant B1,881,787381,224
Events in quadrant C1,848,178362,542
Events in quadrant D2,424,947353,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A078121
B080301
C078731
D098341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3724370.993555%
B3724521.396348%
C3724310.832438%
D37241694.538131%

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 3980 3726 0 0 0.00% 0.00%
B 3980 3726 0 0 0.00% 0.00%
C 3980 3726 0 0 0.00% 0.00%
D 3980 3726 77 77 1.93% 2.07%

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 15 239 26199 271.29 454 444 94.9
A 12 189 4238 39.96 454 444 94.9
A 0 226 3869 36.08 454 444 94.9
B 0 219 50839 559.25 454 441 90.1
B 0 214 14874 160.16 454 441 90.1
B 0 205 13934 149.73 454 441 90.1
C 3 233 112107 1066.71 444 446 104.7
C 13 61 3106 25.41 444 446 104.7
C 3 232 2885 23.3 444 446 104.7
D 13 104 516859 4917.07 435 425 105.0
D 7 254 251770 2393.11 435 425 105.0
D 2 234 13462 124.13 435 425 105.0

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