ASTROSAT CZTI

Data Quality Report

Orbit 15743

Creation date: 2024-06-27T17:12:55.069350
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/AS1T02_095T01_9000002330_15743cztM0_level2.evt modeM0/AS1T02_095T01_9000002330_15743cztM0_level2_quad_clean.evt
Size (bytes)530,596,80099,230,400
Size506.0 MB 94.6 MB
Events in quadrant A3,251,626640,376
Events in quadrant B5,370,789634,542
Events in quadrant C3,363,514631,269
Events in quadrant D3,616,550619,746

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143743
B0207162
C0146082
D0155562

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6875580.843636%
B68755037.316364%
C68751311.905455%
D6875921.338182%

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 8711 6878 3 3 0.03% 0.04%
B 8711 6878 220 220 2.53% 3.20%
C 8711 6878 0 0 0.00% 0.00%
D 8711 6878 19 19 0.22% 0.28%

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 15 239 16635 93.55 837 820 169.1
A 9 143 9322 50.29 837 820 169.1
A 0 226 7270 38.15 837 820 169.1
B 4 251 1896218 11999.72 823 802 158.0
B 4 48 72326 452.81 823 802 158.0
B 4 216 65331 408.53 823 802 158.0
C 14 238 126162 662.33 811 817 189.2
C 3 233 65483 341.7 811 817 189.2
C 13 61 5762 26.13 811 817 189.2
D 1 52 421559 2095.26 822 799 200.8
D 7 223 37639 183.45 822 799 200.8
D 2 234 29061 140.74 822 799 200.8

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