ASTROSAT CZTI

Data Quality Report

Orbit 16721

Creation date: 2024-06-27T17:26:45.288083
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/AS1A05_059T04_9000002476_16721cztM0_level2.evt modeM0/AS1A05_059T04_9000002476_16721cztM0_level2_quad_clean.evt
Size (bytes)144,218,88033,229,440
Size137.5 MB 31.7 MB
Events in quadrant A1,059,767219,758
Events in quadrant B1,041,252226,794
Events in quadrant C1,028,697216,523
Events in quadrant D1,117,318215,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042881
B041921
C042061
D045081

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1740905.172414%
B1740412.356322%
C1740362.068966%
D1740281.609195%

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 1741 1741 62 62 3.56% 3.56%
B 1741 1741 7 7 0.40% 0.40%
C 1741 1741 18 18 1.03% 1.03%
D 1741 1741 24 24 1.38% 1.38%

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 15 174 260335 6176.52 200 196 42.1
A 10 234 22671 533.63 200 196 42.1
A 9 143 3901 87.97 200 196 42.1
B 15 35 89542 2195.33 205 200 40.7
B 3 209 49878 1220.7 205 200 40.7
B 0 229 41335 1010.78 205 200 40.7
C 3 233 187281 4122.75 188 189 45.4
C 0 207 71283 1566.62 188 189 45.4
C 14 238 30353 664.69 188 189 45.4
D 1 52 153240 3161.44 192 185 48.4
D 10 70 118220 2438.08 192 185 48.4
D 5 222 67787 1396.36 192 185 48.4

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