ASTROSAT CZTI

Data Quality Report

Orbit 44768

Creation date: 2024-06-27T23:06:18.409537
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_004T12_9000006020_44768cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44768cztM0_level2_quad_clean.evt
Size (bytes)537,459,840119,079,360
Size512.6 MB 113.6 MB
Events in quadrant A5,444,700787,108
Events in quadrant B4,254,399800,143
Events in quadrant C3,582,386794,853
Events in quadrant D6,026,580697,540

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229422
B0178810
C0162520
D0231630

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75632102.776676%
B75633294.350126%
C7563911.203226%
D75635367.087135%

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 7563 7563 17 17 0.22% 0.22%
B 7563 7563 79 79 1.04% 1.04%
C 7563 7563 47 47 0.62% 0.62%
D 7563 7563 414 414 5.47% 5.47%

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 2024826 11543.16 842 821 175.3
A 13 248 162031 919.4 842 821 175.3
A 3 137 10157 53.24 842 821 175.3
B 0 189 631470 3782.33 838 812 166.7
B 5 255 203823 1217.55 838 812 166.7
B 7 221 28600 166.66 838 812 166.7
C 14 254 137118 699.31 834 839 194.9
C 1 3 75204 381.6 834 839 194.9
C 12 2 64283 325.56 834 839 194.9
D 1 52 1317894 6530.11 811 785 201.7
D 2 249 486392 2407.6 811 785 201.7
D 7 38 438629 2170.79 811 785 201.7

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