ASTROSAT CZTI

Data Quality Report

Orbit 51007

Creation date: 2025-03-04T01:10:43.059644
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/AS1C07_001T02_9000006452_51007cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51007cztM0_level2_quad_clean.evt
Size (bytes)780,200,640107,015,040
Size744.1 MB 102.1 MB
Events in quadrant A7,614,670667,601
Events in quadrant B6,871,584741,361
Events in quadrant C6,280,417668,546
Events in quadrant D7,503,423613,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281594
B0259030
C0241890
D0278250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A789990211.419167%
B78997619.634131%
C78995106.456513%
D78997519.507533%

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 7899 7899 656 656 8.30% 8.30%
B 7899 7899 534 534 6.76% 6.76%
C 7899 7899 423 423 5.36% 5.36%
D 7899 7899 650 650 8.23% 8.23%

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 10 253 2566379 12753.3 806 784 201.2
A 12 80 422365 2095.63 806 784 201.2
A 3 130 365537 1813.15 806 784 201.2
B 4 171 1112977 6435.96 808 781 172.8
B 15 32 639624 3696.8 808 781 172.8
B 12 32 409772 2366.71 808 781 172.8
C 15 1 795261 3611.49 793 786 220.0
C 15 147 574586 2608.36 793 786 220.0
C 15 224 316746 1436.28 793 786 220.0
D 7 126 1275645 5955.93 776 752 214.1
D 15 184 663393 3095.67 776 752 214.1
D 2 216 394475 1839.36 776 752 214.1

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