ASTROSAT CZTI

Data Quality Report

Orbit 20220717_A11_083T01_9000005242_level2

Creation date: 2022-07-19T16:56:40.093284
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/AS1A11_083T01_9000005242cztM0_level2_bc.evt modeM0/AS1A11_083T01_9000005242cztM0_level2_quad_clean.evt
Size (bytes)3,435,770,880562,809,600
Size3.2 GB 536.7 MB
Events in quadrant A12,194,4934,031,277
Events in quadrant B53,109,8842,009,811
Events in quadrant C14,391,2533,947,806
Events in quadrant D21,013,7133,681,087

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09980
B09980
C09980
D09980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01930
B01930
C01930
D01930

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040750
B03156970
C01097650
D01377620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A490592200.448440%
B490593091663.017999%
C490595251.070140%
D4905925285.152979%

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 68123 49070 11 11 0.02% 0.02%
B 68122 48813 7243 7243 10.63% 14.84%
C 68123 49059 90 90 0.13% 0.18%
D 68123 49056 579 579 0.85% 1.18%

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 10 83 1638431 2922.51 2529 2490 559.8
A 9 143 241023 426.12 2529 2490 559.8
A 15 223 204611 361.08 2529 2490 559.8
B 12 1 45182667 150218.54 1517 1488 300.8
B 4 171 845844 2807.32 1517 1488 300.8
B 5 172 266569 881.34 1517 1488 300.8
C 15 214 2069947 3672.23 2455 2439 563.0
C 14 254 1334534 2366.02 2455 2439 563.0
C 0 207 986738 1748.28 2455 2439 563.0
D 12 6 3264615 5686.48 2422 2352 573.7
D 12 227 1635945 2847.53 2422 2352 573.7
D 13 249 1540748 2681.59 2422 2352 573.7

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