ASTROSAT CZTI

Data Quality Report

Orbit 48277

Creation date: 2024-09-06T09:49:50.544176
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_9000006422_48277cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48277cztM0_level2_quad_clean.evt
Size (bytes)544,656,960122,117,760
Size519.4 MB 116.5 MB
Events in quadrant A7,782,981814,265
Events in quadrant B4,109,889832,155
Events in quadrant C3,599,505794,195
Events in quadrant D4,077,916726,169

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284170
B0172750
C0161820
D0173932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76281381.809124%
B7629981.284572%
C7629330.432560%
D7628550.721028%

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 7628 7628 1 1 0.01% 0.01%
B 7629 7629 29 29 0.38% 0.38%
C 7629 7629 26 26 0.34% 0.34%
D 7628 7628 34 34 0.45% 0.45%

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 4404404 24658.64 852 830 178.6
A 0 247 70666 391.06 852 830 178.6
A 13 254 16402 87.2 852 830 178.6
B 4 21 342386 2039.47 849 823 167.5
B 5 255 159825 949.4 849 823 167.5
B 5 171 129122 766.07 849 823 167.5
C 12 2 200768 1011.03 834 839 197.7
C 14 254 117936 592.15 834 839 197.7
C 0 207 16293 78.15 834 839 197.7
D 7 67 207554 980.93 835 809 210.8
D 2 165 171042 807.69 835 809 210.8
D 12 3 96441 453.74 835 809 210.8

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