ASTROSAT CZTI

Data Quality Report

Orbit 20230726_C07_001T10_9000005796_level2

Creation date: 2023-08-02T10:49:37.924446
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/AS1C07_001T10_9000005796cztM0_level2.fits modeM0/AS1C07_001T10_9000005796cztM0_level2_quad_clean.evt
Size (bytes)821,649,6001,050,408,000
Size783.6 MB 1001.7 MB
Events in quadrant A4,855,9366,585,049
Events in quadrant B4,667,3406,631,485
Events in quadrant C4,848,2186,447,509
Events in quadrant D4,064,5685,705,738

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02456570
B01991590
C01908780
D02602540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019240
B019240
C019240
D019240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9402419552.079256%
B940235990.637078%
C94023950.101039%
D9402349575.272114%

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 132090 94023 0 0 0.00% 0.00%
B 132089 94020 0 0 0.00% 0.00%
C 132090 94024 0 0 0.00% 0.00%
D 132090 93951 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 0 29 4018 8.96 1268 1189 315.7
A 9 19 3982 8.85 1268 1189 315.7
A 7 110 3914 8.63 1268 1189 315.7
B 2 9 4169 12.49 1239 1185 238.9
B 3 80 3448 9.47 1239 1185 238.9
B 3 17 3371 9.15 1239 1185 238.9
C 1 81 4041 8.66 1281 1202 327.8
C 1 80 3942 8.36 1281 1202 327.8
C 3 202 3916 8.28 1281 1202 327.8
D 7 3 3138 6.62 1168 1065 313.2
D 10 189 3078 6.43 1168 1065 313.2
D 10 113 2986 6.13 1168 1065 313.2

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