ASTROSAT CZTI

Data Quality Report

Orbit 20151023_P01_163T03_9000000056_level2

Creation date: 2025-01-05T00:50:50.786613
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/AS1P01_163T03_9000000056cztM0_level2.fits modeM0/AS1P01_163T03_9000000056cztM0_level2_quad_clean.evt
Size (bytes)116,533,440114,877,440
Size111.1 MB 109.6 MB
Events in quadrant A669,328666,739
Events in quadrant B663,524603,784
Events in quadrant C668,970651,413
Events in quadrant D566,714596,328

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0692310
B0676560
C0608060
D0614690

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02880
B02880
C02880
D02880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138945864.217648%
B1389410817.780337%
C13894760.546999%
D138941571.129984%

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 20539 13894 0 0 0.00% 0.00%
B 20539 13894 0 0 0.00% 0.00%
C 20539 13894 0 0 0.00% 0.00%
D 20539 13891 0 0 0.00% 0.00%

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 7 110 625 11.17 174 164 41.3
A 0 29 613 10.88 174 164 41.3
A 0 30 483 7.73 174 164 41.3
B 2 9 563 12.4 175 169 31.8
B 14 254 480 9.79 175 169 31.8
B 10 225 429 8.18 175 169 31.8
C 12 241 514 7.83 176 164 44.7
C 2 191 504 7.61 176 164 44.7
C 1 81 490 7.3 176 164 44.7
D 6 44 467 7.85 162 149 40.5
D 6 231 450 7.43 162 149 40.5
D 11 82 433 7.01 162 149 40.5

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