ASTROSAT CZTI

Data Quality Report

Orbit 47891

Creation date: 2024-08-06T19:31:42.763637
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_053T01_9000006370_47891cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47891cztM0_level2_quad_clean.evt
Size (bytes)552,591,360102,375,360
Size527.0 MB 97.6 MB
Events in quadrant A6,661,716690,001
Events in quadrant B3,267,199705,975
Events in quadrant C2,951,974697,348
Events in quadrant D7,057,793542,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02409019
B0145991
C0138121
D0257851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66592283.423938%
B66641842.761104%
C6665240.360090%
D6665119217.884471%

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 7634 6664 56 56 0.73% 0.84%
B 7634 6665 95 95 1.24% 1.43%
C 7635 6666 14 14 0.18% 0.21%
D 7635 6666 1047 1047 13.71% 15.71%

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 3886928 26200.88 711 696 148.3
A 15 235 10814 68.22 711 696 148.3
A 0 31 8875 55.14 711 696 148.3
B 5 255 378265 2706.64 707 684 139.5
B 0 198 31143 218.34 707 684 139.5
B 8 234 27819 194.51 707 684 139.5
C 14 254 117807 694.46 708 713 168.6
C 12 2 43139 251.62 708 713 168.6
C 14 67 21276 121.96 708 713 168.6
D 2 37 3885417 23440.33 657 636 165.7
D 2 165 269541 1622.54 657 636 165.7
D 12 2 146692 881.29 657 636 165.7

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