ASTROSAT CZTI

Data Quality Report

Orbit 12017

Creation date: 2024-06-27T16:21:14.354375
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/AS1A04_112T01_9000001778_12017cztM0_level2.evt modeM0/AS1A04_112T01_9000001778_12017cztM0_level2_quad_clean.evt
Size (bytes)1,000,825,920219,173,760
Size954.5 MB 209.0 MB
Events in quadrant A6,548,1241,467,888
Events in quadrant B9,919,4441,431,295
Events in quadrant C5,597,3641,463,751
Events in quadrant D7,376,0081,386,858

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283694
B0383603
C0260773
D0308403

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620
B02620
C02620
D02620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128501741.354086%
B1285011929.276265%
C12850450.350195%
D128503452.684825%

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 14021 12853 46 46 0.33% 0.36%
B 14021 12852 587 587 4.19% 4.57%
C 14021 12853 2 2 0.01% 0.02%
D 14021 12852 287 287 2.05% 2.23%

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 1 162 297875 1003.08 1457 1425 295.5
A 1 178 163423 548.14 1457 1425 295.5
A 13 248 162017 543.39 1457 1425 295.5
B 4 206 1997281 7465.36 1430 1393 267.4
B 4 239 1203192 4495.17 1430 1393 267.4
B 3 64 620239 2314.71 1430 1393 267.4
C 14 234 24370 69.87 1428 1430 328.3
C 13 61 10480 27.56 1428 1430 328.3
C 12 4 5743 13.14 1428 1430 328.3
D 7 80 795097 2369.75 1401 1359 334.9
D 8 195 426775 1270.1 1401 1359 334.9
D 1 52 216672 642.83 1401 1359 334.9

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