ASTROSAT CZTI

Data Quality Report

Orbit 37046

Creation date: 2024-06-27T21:34:48.293126
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_083T04_9000005272_37046cztM0_level2.evt modeM0/AS1A11_083T04_9000005272_37046cztM0_level2_quad_clean.evt
Size (bytes)520,750,08081,550,080
Size496.6 MB 77.8 MB
Events in quadrant A2,705,423547,908
Events in quadrant B3,233,801545,857
Events in quadrant C4,457,666521,188
Events in quadrant D5,013,433481,528

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114143
B0130712
C0166822
D0185622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5324120.225394%
B53241663.117956%
C53243095.803907%
D532469112.978963%

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 7088 5325 2 2 0.03% 0.04%
B 7088 5325 138 138 1.95% 2.59%
C 7088 5325 302 302 4.26% 5.67%
D 7088 5325 625 625 8.82% 11.74%

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 249231 2010.77 612 600 123.6
A 11 254 84487 678.42 612 600 123.6
A 13 254 7572 56.39 612 600 123.6
B 0 229 421187 3626.63 603 587 116.0
B 5 172 126637 1086.87 603 587 116.0
B 0 213 75254 643.82 603 587 116.0
C 14 254 1078106 7802.27 586 590 138.1
C 0 10 546850 3955.45 586 590 138.1
C 0 207 255322 1844.51 586 590 138.1
D 12 17 2072224 14890.08 567 552 139.1
D 2 250 188357 1349.84 567 552 139.1
D 2 153 182616 1308.58 567 552 139.1

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