ASTROSAT CZTI

Data Quality Report

Orbit 33977

Creation date: 2024-06-27T20:54:58.578766
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/AS1A11_034T07_9000004860_33977cztM0_level2.evt modeM0/AS1A11_034T07_9000004860_33977cztM0_level2_quad_clean.evt
Size (bytes)211,832,64027,120,960
Size202.0 MB 25.9 MB
Events in quadrant A1,701,0791,444
Events in quadrant B1,340,085235,599
Events in quadrant C1,591,836226,613
Events in quadrant D1,654,388221,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063151
B052241
C058891
D062201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18391839100.000000%
B1839794.295813%
C18391799.733551%
D1839653.534530%

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 1838 1838 100 100 5.44% 5.44%
B 1839 1839 45 45 2.45% 2.45%
C 1839 1839 160 160 8.70% 8.70%
D 1839 1839 54 54 2.94% 2.94%

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 15 169 1683763 822065.3 4 4 2.0
A 10 83 212 101.55 4 4 2.0
A 14 238 174 83.0 4 4 2.0
B 5 172 292382 6828.78 211 206 42.8
B 0 219 81757 1906.02 211 206 42.8
B 0 190 77554 1807.79 211 206 42.8
C 4 254 550445 11425.66 202 203 48.2
C 0 10 118197 2450.12 202 203 48.2
C 15 214 81504 1688.2 202 203 48.2
D 8 195 429657 8136.85 209 203 52.8
D 13 249 190730 3609.91 209 203 52.8
D 7 238 53018 1000.68 209 203 52.8

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