ASTROSAT CZTI

Data Quality Report

Orbit 40660

Creation date: 2024-06-27T22:18:49.637621
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_029T02_9000005558_40660cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40660cztM0_level2_quad_clean.evt
Size (bytes)55,152,00016,430,400
Size52.6 MB 15.7 MB
Events in quadrant A565,169109,737
Events in quadrant B489,974113,820
Events in quadrant C486,566109,631
Events in quadrant D425,29793,141

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022882
B020511
C019831
D018691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91440.437637%
B91450.547046%
C91450.547046%
D914707.658643%

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 914 914 2 2 0.22% 0.22%
B 914 914 3 3 0.33% 0.33%
C 914 914 4 4 0.44% 0.44%
D 914 914 0 0 0.00% 0.00%

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 141386 6056.25 103 101 23.3
A 13 28 19259 821.22 103 101 23.3
A 13 6 2670 110.12 103 101 23.3
B 0 229 58613 2601.53 105 102 22.5
B 5 255 11032 485.97 105 102 22.5
B 4 171 3425 147.75 105 102 22.5
C 15 214 44219 1654.62 105 106 26.7
C 0 10 19444 725.34 105 106 26.7
C 14 254 7610 281.46 105 106 26.7
D 12 191 30452 1164.43 98 94 26.1
D 5 51 5514 207.89 98 94 26.1
D 3 14 4308 161.63 98 94 26.1

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