ASTROSAT CZTI

Data Quality Report

Orbit 11254

Creation date: 2024-06-27T16:10:22.370657
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/AS1T01_202T01_9000001640_11254cztM0_level2.evt modeM0/AS1T01_202T01_9000001640_11254cztM0_level2_quad_clean.evt
Size (bytes)760,847,040150,667,200
Size725.6 MB 143.7 MB
Events in quadrant A5,519,584993,563
Events in quadrant B5,832,200995,011
Events in quadrant C4,424,9461,006,070
Events in quadrant D6,632,020919,329

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221091
B0231251
C0191781
D0256201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A93682602.775406%
B93683233.447908%
C9368760.811272%
D93686627.066610%

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 9913 9369 137 137 1.38% 1.46%
B 9913 9368 145 145 1.46% 1.55%
C 9913 9369 9 9 0.09% 0.10%
D 9913 9369 471 471 4.75% 5.03%

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 14 238 623034 2454.8 1140 1117 253.3
A 8 5 326675 1285.03 1140 1117 253.3
A 8 15 119502 467.28 1140 1117 253.3
B 4 239 958915 4206.69 1137 1113 227.7
B 11 51 180758 789.0 1137 1113 227.7
B 15 204 73714 318.86 1137 1113 227.7
C 9 204 69173 255.22 1116 1130 266.6
C 13 61 8138 26.29 1116 1130 266.6
C 1 90 5162 15.12 1116 1130 266.6
D 10 253 964926 3531.78 1069 1043 272.9
D 13 104 746773 2732.44 1069 1043 272.9
D 8 195 329608 1203.9 1069 1043 272.9

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