ASTROSAT CZTI

Data Quality Report

Orbit 20201102_A09_038T24_9000003968_level2

Creation date: 2021-01-07T15:15:49.103367
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/AS1A09_038T24_9000003968cztM0_level2_bc.evt modeM0/AS1A09_038T24_9000003968cztM0_level2_quad_clean.evt
Size (bytes)165,908,16082,422,720
Size158.2 MB 78.6 MB
Events in quadrant A1,041,773548,039
Events in quadrant B1,134,587563,583
Events in quadrant C1,013,484536,437
Events in quadrant D1,502,123513,438

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099090
B0103390
C099440
D0113260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4764170.356843%
B4764230.482788%
C4764440.923594%
D4764360.755668%

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 5964 4764 0 0 0.00% 0.00%
B 5964 4764 0 0 0.00% 0.00%
C 5964 4764 0 0 0.00% 0.00%
D 5964 4764 13 13 0.22% 0.27%

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 8 192 9185 150.5 267 262 59.3
A 13 254 7082 115.03 267 262 59.3
A 0 226 1692 24.12 267 262 59.3
B 3 64 44667 829.97 273 267 53.5
B 0 230 14429 264.72 273 267 53.5
B 4 52 8850 160.44 273 267 53.5
C 4 175 2777 39.83 261 260 63.2
C 1 16 2614 37.25 261 260 63.2
C 13 61 1466 19.09 261 260 63.2
D 1 52 278375 4602.43 261 253 60.4
D 6 112 130527 2155.81 261 253 60.4
D 2 250 75705 1248.6 261 253 60.4

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