ASTROSAT CZTI

Data Quality Report

Orbit 47856

Creation date: 2024-08-03T18:08:27.957321
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/AS1A09_038T01_9000006360_47856cztM0_level2.fits modeM0/AS1A09_038T01_9000006360_47856cztM0_level2_quad_clean.evt
Size (bytes)626,808,960116,930,880
Size597.8 MB 111.5 MB
Events in quadrant A7,136,186774,163
Events in quadrant B3,324,169810,744
Events in quadrant C3,208,888793,059
Events in quadrant D8,947,417636,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263250
B0156780
C0155500
D0318360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75622172.869611%
B7563801.057781%
C7563190.251223%
D7563124716.488166%

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 7562 7562 1 1 0.01% 0.01%
B 7563 7563 3 3 0.04% 0.04%
C 7562 7562 0 0 0.00% 0.00%
D 7563 7563 1169 1169 15.46% 15.46%

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 3909377 22862.28 818 798 171.0
A 3 7 42756 245.42 818 798 171.0
A 14 248 19107 107.09 818 798 171.0
B 5 255 36847 226.65 817 787 159.1
B 4 21 27430 167.46 817 787 159.1
B 12 111 20760 125.54 817 787 159.1
C 14 254 17903 90.13 814 815 189.6
C 1 3 11694 57.38 814 815 189.6
C 13 61 5233 23.3 814 815 189.6
D 2 37 2155135 11240.07 772 747 191.7
D 7 96 1478607 7710.43 772 747 191.7
D 2 165 1012418 5278.18 772 747 191.7

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