ASTROSAT CZTI

Data Quality Report

Orbit 47665

Creation date: 2024-07-21T20:12:52.330302
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/AS1A13_082T01_9000006342_47665cztM0_level2.fits modeM0/AS1A13_082T01_9000006342_47665cztM0_level2_quad_clean.evt
Size (bytes)494,239,680107,835,840
Size471.3 MB 102.8 MB
Events in quadrant A6,914,206720,609
Events in quadrant B4,741,062704,539
Events in quadrant C2,942,765722,528
Events in quadrant D3,194,039665,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257523
B0183411
C0133331
D0139851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64842714.179519%
B64855288.141866%
C6485410.632228%
D6485931.434079%

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 7589 6484 27 27 0.36% 0.42%
B 7590 6486 266 266 3.50% 4.10%
C 7590 6486 2 2 0.03% 0.03%
D 7590 6486 27 27 0.36% 0.42%

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 3801317 24194.48 756 740 157.1
A 9 191 173233 1098.09 756 740 157.1
A 3 137 8612 50.11 756 740 157.1
B 0 200 1633194 11235.79 740 717 145.3
B 0 190 56917 386.81 740 717 145.3
B 5 255 36384 245.48 740 717 145.3
C 14 254 46600 262.93 741 743 174.4
C 3 233 7034 36.07 741 743 174.4
C 13 61 4914 23.92 741 743 174.4
D 2 249 126134 669.35 748 724 187.4
D 2 165 87846 464.99 748 724 187.4
D 2 234 34418 179.83 748 724 187.4

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