ASTROSAT CZTI

Data Quality Report

Orbit 07545

Creation date: 2024-06-27T15:21:04.582846
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/AS1G06_076T01_9000001038_07545cztM0_level2.evt modeM0/AS1G06_076T01_9000001038_07545cztM0_level2_quad_clean.evt
Size (bytes)573,117,120103,798,080
Size546.6 MB 99.0 MB
Events in quadrant A3,939,338647,211
Events in quadrant B4,080,347657,003
Events in quadrant C4,364,660635,828
Events in quadrant D4,392,331609,700

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176623
B0178522
C0190792
D0192672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01760
B01760
C01760
D01760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8545670.784084%
B85451041.217086%
C85452262.644822%
D8545830.971328%

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 9260 8548 1 1 0.01% 0.01%
B 9260 8548 0 0 0.00% 0.00%
C 9260 8547 141 141 1.52% 1.65%
D 9260 8548 42 42 0.45% 0.49%

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 13 14 10256 44.99 1017 995 205.9
A 0 226 9617 41.88 1017 995 205.9
A 12 194 9248 40.09 1017 995 205.9
B 0 219 31090 153.41 1026 1000 196.1
B 0 214 24349 119.04 1026 1000 196.1
B 12 111 19543 94.54 1026 1000 196.1
C 9 68 509998 2248.52 973 975 226.4
C 1 16 22617 95.6 973 975 226.4
C 8 128 18317 76.61 973 975 226.4
D 2 136 233339 964.5 981 947 240.9
D 2 152 204995 846.87 981 947 240.9
D 2 14 130528 537.8 981 947 240.9

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