ASTROSAT CZTI

Data Quality Report

Orbit 47518

Creation date: 2024-07-11T21:56:48.789753
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/AS1C09_002T01_9000006334_47518cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47518cztM0_level2_quad_clean.evt
Size (bytes)533,177,280110,914,560
Size508.5 MB 105.8 MB
Events in quadrant A6,944,748741,902
Events in quadrant B3,999,896759,987
Events in quadrant C2,846,510743,386
Events in quadrant D5,456,737673,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250011
B0163101
C0129231
D0205991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63063846.089439%
B63073134.962740%
C6306801.268633%
D63063094.900095%

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 7526 6306 105 105 1.40% 1.67%
B 7527 6307 121 121 1.61% 1.92%
C 7526 6307 0 0 0.00% 0.00%
D 7526 6307 213 213 2.83% 3.38%

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 3832414 25150.11 737 722 152.4
A 9 191 133243 869.83 737 722 152.4
A 13 248 127175 830.0 737 722 152.4
B 5 171 368907 2645.61 732 708 139.2
B 5 172 299571 2147.42 732 708 139.2
B 5 32 167077 1195.41 732 708 139.2
C 14 220 16788 95.62 724 727 168.0
C 13 61 5045 25.71 724 727 168.0
C 1 3 3700 17.7 724 727 168.0
D 6 112 1329636 7404.64 721 697 179.5
D 4 222 592654 3298.29 721 697 179.5
D 7 55 204494 1135.53 721 697 179.5

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