ASTROSAT CZTI

Data Quality Report

Orbit 26375

Creation date: 2024-06-27T19:28:18.684745
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/AS1A09_088T01_9000003812_26375cztM0_level2.evt modeM0/AS1A09_088T01_9000003812_26375cztM0_level2_quad_clean.evt
Size (bytes)808,459,200106,488,000
Size771.0 MB 101.6 MB
Events in quadrant A3,484,919734,487
Events in quadrant B3,180,976761,785
Events in quadrant C8,700,207641,587
Events in quadrant D8,681,328634,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145810
B0134450
C0304440
D0302870

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64741111.714551%
B6474280.432499%
C6473199630.835779%
D6473192729.769813%

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 7574 6476 39 39 0.51% 0.60%
B 7574 6476 0 0 0.00% 0.00%
C 7573 6474 1160 1160 15.32% 17.92%
D 7573 6473 1527 1527 20.16% 23.59%

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 0 13 410688 2604.14 797 783 157.4
A 13 254 10715 63.1 797 783 157.4
A 3 137 7088 40.06 797 783 157.4
B 12 111 17958 113.79 807 786 150.9
B 11 111 16000 100.82 807 786 150.9
B 14 111 14564 91.3 807 786 150.9
C 3 233 5836818 35952.75 703 707 162.3
C 14 238 112305 687.48 703 707 162.3
C 2 16 8958 50.83 703 707 162.3
D 7 80 3270150 20395.33 678 663 160.3
D 1 52 2655237 16559.46 678 663 160.3
D 11 176 78034 482.65 678 663 160.3

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