ASTROSAT CZTI

Data Quality Report

Orbit 39470

Creation date: 2024-06-27T22:04:55.672996
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/AS1A12_044T16_9000005478_39470cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39470cztM0_level2_quad_clean.evt
Size (bytes)651,000,960144,792,000
Size620.8 MB 138.1 MB
Events in quadrant A5,015,317976,452
Events in quadrant B5,324,340989,587
Events in quadrant C8,046,703898,910
Events in quadrant D5,007,583889,059

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203382
B0219722
C0298642
D0212112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9082320.352345%
B90822442.686633%
C90828479.326140%
D90821621.783748%

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 10425 9083 15 15 0.14% 0.17%
B 10425 9083 145 145 1.39% 1.60%
C 10425 9083 719 719 6.90% 7.92%
D 10425 9083 112 112 1.07% 1.23%

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 83 615684 3059.34 994 974 200.9
A 15 222 449550 2232.51 994 974 200.9
A 2 79 38164 185.09 994 974 200.9
B 5 255 1094867 5770.53 977 951 189.6
B 8 3 340179 1789.46 977 951 189.6
B 12 111 24420 123.8 977 951 189.6
C 15 208 4000449 18360.42 930 936 217.8
C 15 214 364060 1666.98 930 936 217.8
C 9 187 42724 191.83 930 936 217.8
D 2 249 547387 2301.44 961 932 237.4
D 12 227 253000 1061.61 961 932 237.4
D 2 153 160143 670.53 961 932 237.4

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