ASTROSAT CZTI

Data Quality Report

Orbit 20190605_C04_009T05_9000002968_level2

Creation date: 2019-06-07T11:15:47.631570
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C04_009T05_9000002968cztM0_level2_bc.evt modeM0/AS1C04_009T05_9000002968cztM0_level2_quad_clean.evt
Size (bytes)276,448,320119,738,880
Size263.6 MB 114.2 MB
Events in quadrant A1,286,853827,929
Events in quadrant B1,576,182821,925
Events in quadrant C2,974,733777,429
Events in quadrant D2,132,153793,585

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121410
B0132000
C0196110
D0146550

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5803550.947786%
B5803721.240738%
C58034988.581768%
D58031282.205756%

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 6998 5802 0 0 0.00% 0.00%
B 6998 5802 1 1 0.01% 0.02%
C 6998 5802 2 2 0.03% 0.03%
D 6998 5802 59 59 0.84% 1.02%

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 8 205 4625 57.93 333 327 74.2
A 0 226 2346 27.21 333 327 74.2
A 12 194 2271 26.2 333 327 74.2
B 0 189 90213 1425.86 330 324 63.0
B 0 197 36547 574.59 330 324 63.0
B 3 112 33574 527.43 330 324 63.0
C 3 233 1052979 13813.58 313 311 76.2
C 9 221 396200 5195.03 313 311 76.2
C 4 254 305943 4010.64 313 311 76.2
D 1 52 340057 4284.25 331 320 79.3
D 7 38 193271 2433.21 331 320 79.3
D 15 0 158041 1988.94 331 320 79.3

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