ASTROSAT CZTI

Data Quality Report

Orbit 20240503_A13_068T06_9000006220_level2

Creation date: 2024-05-06T08:44:02.099972
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_068T06_9000006220cztM0_level2.fits modeM0/AS1A13_068T06_9000006220cztM0_level2_quad_clean.evt
Size (bytes)492,367,680429,091,200
Size469.6 MB 409.2 MB
Events in quadrant A2,918,2982,401,696
Events in quadrant B2,854,3142,447,557
Events in quadrant C2,959,1922,345,439
Events in quadrant D2,418,5622,041,028

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011180
B011180
C011180
D011180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01799320
B01230760
C01151740
D01643680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0910
B0910
C0910
D0910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5476915722.870237%
B5476913972.550713%
C547694170.761380%
D5476946298.451861%

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 63959 54763 0 0 0.00% 0.00%
B 63959 54753 0 0 0.00% 0.00%
C 63959 54764 0 0 0.00% 0.00%
D 63959 54677 0 0 0.00% 0.00%

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 7 110 2386 8.52 761 708 196.9
A 0 29 2333 8.25 761 708 196.9
A 14 95 2232 7.74 761 708 196.9
B 2 9 2636 12.9 752 714 148.9
B 2 8 2151 9.65 752 714 148.9
B 3 17 2125 9.47 752 714 148.9
C 3 202 2311 7.71 783 725 205.8
C 1 81 2217 7.25 783 725 205.8
C 3 203 2187 7.1 783 725 205.8
D 6 67 1785 6.03 695 630 191.5
D 10 189 1746 5.82 695 630 191.5
D 15 63 1710 5.64 695 630 191.5

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