ASTROSAT CZTI

Data Quality Report

Orbit 18916

Creation date: 2024-06-27T17:56:30.316315
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_163T01_9000002820_18916cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18916cztM0_level2_quad_clean.evt
Size (bytes)785,278,08094,965,120
Size748.9 MB 90.6 MB
Events in quadrant A12,584,854432,399
Events in quadrant B4,059,411686,173
Events in quadrant C3,430,659659,737
Events in quadrant D3,261,634637,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0419552
B0162542
C0142442
D0139842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6584419863.760632%
B65842633.994532%
C6584801.215067%
D6584160.243013%

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 7824 6585 3083 3083 39.40% 46.82%
B 7824 6585 111 111 1.42% 1.69%
C 7824 6585 9 9 0.12% 0.14%
D 7824 6585 4 4 0.05% 0.06%

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 14 235 10515198 97635.06 536 527 107.7
A 13 254 5148 42.91 536 527 107.7
A 0 226 4631 38.11 536 527 107.7
B 3 112 520576 3292.12 834 814 157.9
B 5 250 129483 814.98 834 814 157.9
B 0 189 37994 235.49 834 814 157.9
C 14 238 127688 680.71 805 813 186.4
C 3 233 86278 458.54 805 813 186.4
C 6 96 72217 383.1 805 813 186.4
D 7 238 160431 822.23 805 782 194.2
D 2 234 26511 132.51 805 782 194.2
D 12 110 17313 85.14 805 782 194.2

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