ASTROSAT CZTI

Data Quality Report

Orbit 19680

Creation date: 2024-06-27T18:05:29.331064
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_212T08_9000002934_19680cztM0_level2.evt modeM0/AS1A05_212T08_9000002934_19680cztM0_level2_quad_clean.evt
Size (bytes)120,746,88010,696,320
Size115.2 MB 10.2 MB
Events in quadrant A739,37456,935
Events in quadrant B1,333,22454,059
Events in quadrant C710,06554,480
Events in quadrant D777,67654,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030150
B048510
C028660
D031610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1378191.378810%
B137823416.981132%
C137990.652647%
D1379251.812908%

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 1378 1378 10 10 0.73% 0.73%
B 1378 1378 167 167 12.12% 12.12%
C 1379 1379 0 0 0.00% 0.00%
D 1379 1379 15 15 1.09% 1.09%

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 5 16 68152 1870.19 169 166 36.4
A 11 29 11349 307.63 169 166 36.4
A 9 143 7331 197.1 169 166 36.4
B 3 112 676486 21026.64 157 154 32.2
B 4 216 13366 410.75 157 154 32.2
B 0 197 12213 374.91 157 154 32.2
C 3 233 26278 645.39 163 163 40.5
C 14 238 25698 631.06 163 163 40.5
C 8 208 14864 363.31 163 163 40.5
D 12 218 86815 2029.03 165 160 42.7
D 1 52 44587 1040.26 165 160 42.7
D 7 38 8765 201.49 165 160 42.7

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