ASTROSAT CZTI

Data Quality Report

Orbit 37851

Creation date: 2024-06-27T21:45:17.509768
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_001T12_9000005352_37851cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37851cztM0_level2_quad_clean.evt
Size (bytes)411,534,72096,356,160
Size392.5 MB 91.9 MB
Events in quadrant A2,667,037652,197
Events in quadrant B2,664,213662,180
Events in quadrant C2,545,144640,970
Events in quadrant D4,232,532597,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110632
B0113161
C0108081
D0161321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5209150.287963%
B5209561.075062%
C5209270.518334%
D52092825.413707%

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 7002 5210 10 10 0.14% 0.19%
B 7002 5210 44 44 0.63% 0.84%
C 7002 5210 23 23 0.33% 0.44%
D 7002 5210 259 259 3.70% 4.97%

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 287151 2416.71 591 580 118.6
A 9 143 49704 414.27 591 580 118.6
A 15 222 26442 218.1 591 580 118.6
B 5 172 277102 2509.87 581 566 110.2
B 0 230 31263 278.61 581 566 110.2
B 0 219 18415 162.0 581 566 110.2
C 15 214 217285 1654.89 563 567 131.0
C 0 10 79244 600.79 563 567 131.0
C 1 23 44918 338.67 563 567 131.0
D 2 249 836017 6146.58 558 542 135.9
D 1 52 622425 4575.19 558 542 135.9
D 2 250 168097 1232.7 558 542 135.9

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