ASTROSAT CZTI

Data Quality Report

Orbit 44081

Creation date: 2024-06-27T22:59:09.141056
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_029T01_9000005940_44081cztM0_level2.fits modeM0/AS1A13_029T01_9000005940_44081cztM0_level2_quad_clean.evt
Size (bytes)451,385,280116,559,360
Size430.5 MB 111.2 MB
Events in quadrant A4,960,848786,450
Events in quadrant B3,119,436826,174
Events in quadrant C3,087,534766,991
Events in quadrant D5,021,908684,103

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195562
B0137952
C0138922
D0195942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66831642.453988%
B6684711.062238%
C6684410.613405%
D66843034.533214%

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 7868 6684 55 55 0.70% 0.82%
B 7869 6685 0 0 0.00% 0.00%
C 7869 6685 5 5 0.06% 0.07%
D 7869 6684 254 254 3.23% 3.80%

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 1251177 7813.58 783 772 160.0
A 12 227 537256 3352.4 783 772 160.0
A 7 3 123276 765.51 783 772 160.0
B 12 111 20112 125.8 789 765 153.8
B 14 111 18536 115.56 789 765 153.8
B 11 111 18182 113.25 789 765 153.8
C 14 254 67475 367.23 765 771 181.6
C 3 233 9930 50.42 765 771 181.6
C 2 14 9604 48.63 765 771 181.6
D 13 249 801986 4307.36 743 722 186.0
D 1 52 720735 3870.58 743 722 186.0
D 13 174 209541 1122.55 743 722 186.0

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