ASTROSAT CZTI

Data Quality Report

Orbit 12246

Creation date: 2024-06-27T16:24:24.265821
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/AS1C03_005T01_9000001810_12246cztM0_level2.evt modeM0/AS1C03_005T01_9000001810_12246cztM0_level2_quad_clean.evt
Size (bytes)496,788,480126,768,960
Size473.8 MB 120.9 MB
Events in quadrant A3,862,554864,384
Events in quadrant B4,130,511857,243
Events in quadrant C3,314,434854,672
Events in quadrant D3,313,609826,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156872
B0163981
C0140211
D0140351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62461672.673711%
B62463685.891771%
C62461111.777137%
D62461111.777137%

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 7477 6248 23 23 0.31% 0.37%
B 7477 6248 191 191 2.55% 3.06%
C 7477 6248 40 40 0.53% 0.64%
D 7477 6248 35 35 0.47% 0.56%

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 13 251 478598 3073.54 772 757 155.5
A 1 162 120491 770.15 772 757 155.5
A 1 178 66542 423.14 772 757 155.5
B 4 239 809972 5801.31 755 736 139.5
B 11 51 151255 1079.05 755 736 139.5
B 4 80 37718 265.12 755 736 139.5
C 15 208 354361 2132.49 736 741 165.8
C 4 175 33070 194.96 736 741 165.8
C 1 16 22396 130.59 736 741 165.8
D 1 52 161812 905.98 745 723 177.8
D 13 104 96121 536.53 745 723 177.8
D 10 199 70388 391.8 745 723 177.8

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