ASTROSAT CZTI

Data Quality Report

Orbit 20200219_T03_180T01_9000003524_level2

Creation date: 2020-02-21T10:42:07.510547
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/AS1T03_180T01_9000003524cztM0_level2_bc.evt modeM0/AS1T03_180T01_9000003524cztM0_level2_quad_clean.evt
Size (bytes)2,888,297,2801,047,712,320
Size2.7 GB 999.2 MB
Events in quadrant A16,570,7626,708,790
Events in quadrant B19,056,6106,821,205
Events in quadrant C16,352,1986,571,060
Events in quadrant D30,242,9096,349,464

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01615960
B01700680
C01623470
D02033520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015700
B015700
C015700
D015700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01270
B01270
C01270
D01270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A770669501.232710%
B7706616442.133236%
C7706614311.856850%
D7706619972.591285%

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 89166 77061 0 0 0.00% 0.00%
B 89166 77055 80 80 0.09% 0.10%
C 89166 77058 0 0 0.00% 0.00%
D 89166 77056 294 294 0.33% 0.38%

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 13 254 129766 136.89 4277 4217 917.2
A 0 226 27564 25.46 4277 4217 917.2
A 12 194 26707 24.52 4277 4217 917.2
B 3 64 1107401 1378.81 4321 4234 800.1
B 0 189 418642 517.96 4321 4234 800.1
B 0 229 345273 426.25 4321 4234 800.1
C 0 10 187202 187.64 4146 4145 975.6
C 7 247 166817 166.75 4146 4145 975.6
C 4 175 33948 30.55 4146 4145 975.6
D 8 195 5130643 5283.34 4187 4052 970.3
D 7 238 3441752 3542.81 4187 4052 970.3
D 1 52 3249281 3344.45 4187 4052 970.3

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