ASTROSAT CZTI

Data Quality Report

Orbit 23114

Creation date: 2024-06-27T18:50:05.677392
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/AS1A08_008T01_9000003414_23114cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23114cztM0_level2_quad_clean.evt
Size (bytes)488,269,440120,035,520
Size465.7 MB 114.5 MB
Events in quadrant A4,850,397802,825
Events in quadrant B3,252,656851,202
Events in quadrant C2,866,213797,927
Events in quadrant D3,418,301772,125

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183611
B0134961
C0123851
D0142301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A589161010.354778%
B58921682.851324%
C5892641.086219%
D58921041.765105%

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 7151 5892 497 497 6.95% 8.44%
B 7152 5893 85 85 1.19% 1.44%
C 7152 5893 2 2 0.03% 0.03%
D 7152 5893 74 74 1.03% 1.26%

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 6 16 2112394 14941.54 710 697 141.3
A 13 254 9327 61.06 710 697 141.3
A 0 226 6274 39.46 710 697 141.3
B 0 189 265053 1929.8 730 712 137.0
B 0 190 76901 556.21 730 712 137.0
B 0 228 27437 195.1 730 712 137.0
C 14 238 113426 708.36 689 693 159.1
C 0 207 26013 159.1 689 693 159.1
C 0 10 18692 113.1 689 693 159.1
D 1 239 322973 1922.47 692 672 167.6
D 12 233 256786 1527.68 692 672 167.6
D 1 52 63191 372.92 692 672 167.6

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