ASTROSAT CZTI

Data Quality Report

Orbit 00651

Creation date: 2024-06-27T14:01:01.675110
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_126T04_9000000092_00651cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00651cztM0_level2_quad_clean.evt
Size (bytes)819,198,72038,255,040
Size781.2 MB 36.5 MB
Events in quadrant A6,138,592199,515
Events in quadrant B6,364,908203,364
Events in quadrant C5,757,747199,832
Events in quadrant D6,203,363191,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219172
B0225732
C0208024
D0221592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183180.347289%
B5183130.250820%
C518230.057893%
D51821162.238518%

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 7339 5184 121 121 1.65% 2.33%
B 7339 5184 123 123 1.68% 2.37%
C 7338 5183 38 38 0.52% 0.73%
D 7338 5183 297 297 4.05% 5.73%

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 79 95685 272.16 1554 1539 345.9
A 0 69 15944 41.64 1554 1539 345.9
A 13 190 13055 33.29 1554 1539 345.9
B 4 172 139527 374.92 1576 1589 367.9
B 5 191 93473 249.74 1576 1589 367.9
B 7 221 23277 58.95 1576 1589 367.9
C 9 52 77987 190.78 1438 1492 401.0
C 15 241 8818 18.27 1438 1492 401.0
C 9 188 8574 17.66 1438 1492 401.0
D 1 4 460496 1085.82 1355 1410 422.8
D 12 237 162349 380.65 1355 1410 422.8
D 13 221 116123 271.32 1355 1410 422.8

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