ASTROSAT CZTI

Data Quality Report

Orbit 36337

Creation date: 2022-06-18T16:28:51.899174
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_001T08_9000005190_36337cztM0_level2.evt modeM0/AS1C07_001T08_9000005190_36337cztM0_level2_quad_clean.evt
Size (bytes)181,031,04041,592,960
Size172.6 MB 39.7 MB
Events in quadrant A1,139,349280,435
Events in quadrant B1,552,883272,586
Events in quadrant C1,207,040278,599
Events in quadrant D1,429,281266,249

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047402
B061081
C048771
D057821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223590.402685%
B22351436.398210%
C2235401.789709%
D2235522.326622%

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 3817 2236 5 5 0.13% 0.22%
B 3817 2236 81 81 2.12% 3.62%
C 3817 2236 28 28 0.73% 1.25%
D 3816 2235 50 50 1.31% 2.24%

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 89106 1672.35 258 253 53.1
A 9 143 34067 636.43 258 253 53.1
A 13 6 4390 77.86 258 253 53.1
B 5 236 274838 5582.95 250 243 49.2
B 5 172 113752 2307.82 250 243 49.2
B 4 171 39749 803.22 250 243 49.2
C 0 10 103899 1724.53 252 253 60.1
C 15 214 98184 1629.44 252 253 60.1
C 0 207 15802 258.72 252 253 60.1
D 12 6 158924 2532.38 252 244 62.7
D 13 171 118210 1882.62 252 244 62.7
D 2 250 59538 946.27 252 244 62.7

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