ASTROSAT CZTI

Data Quality Report

Orbit 20180619_A04_203T01_9000002180_level2

Creation date: 2018-06-26T15:28:38.402036
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/AS1A04_203T01_9000002180cztM0_level2_bc.evt modeM0/AS1A04_203T01_9000002180cztM0_level2_quad_clean.evt
Size (bytes)5,427,089,2801,014,779,520
Size5.1 GB 967.8 MB
Events in quadrant A91,821,6805,903,034
Events in quadrant B22,640,7326,464,038
Events in quadrant C25,687,4786,313,879
Events in quadrant D18,474,5236,257,227

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017200
B017200
C017200
D017200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04084950
B01934240
C02028890
D01780000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A845172368528.023948%
B8451725943.069205%
C8451713901.644640%
D845178501.005715%

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 96643 84505 6771 6771 7.01% 8.01%
B 96643 84508 268 268 0.28% 0.32%
C 96643 84505 29 29 0.03% 0.03%
D 96643 84508 14 14 0.01% 0.02%

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 15 74544591 82736.32 4120 4035 900.9
A 12 189 872691 964.17 4120 4035 900.9
A 0 23 250709 273.8 4120 4035 900.9
B 10 16 3506990 4211.26 4447 4336 831.7
B 4 142 638416 762.36 4447 4336 831.7
B 0 229 322757 382.84 4447 4336 831.7
C 3 233 6215591 6622.18 4316 4263 938.0
C 4 254 1875600 1995.12 4316 4263 938.0
C 9 236 390991 412.31 4316 4263 938.0
D 2 234 394211 367.99 4394 4262 1059.7
D 2 120 265465 246.5 4394 4262 1059.7
D 13 172 209577 193.75 4394 4262 1059.7

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