ASTROSAT CZTI

Data Quality Report

Orbit 20201103_C05_019T04_9000003974_level2

Creation date: 2021-01-07T14:57:32.321099
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C05_019T04_9000003974cztM0_level2_bc.evt modeM0/AS1C05_019T04_9000003974cztM0_level2_quad_clean.evt
Size (bytes)1,665,659,520811,105,920
Size1.6 GB 773.5 MB
Events in quadrant A9,833,9385,460,426
Events in quadrant B10,783,9595,559,210
Events in quadrant C9,893,9475,350,999
Events in quadrant D16,758,6385,005,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09540
B08480
C09540
D09540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0962050
B0998350
C0980040
D01248090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A465933430.736162%
B465935091.092439%
C465937041.510957%
D4659326955.784131%

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 55974 46593 1 1 0.00% 0.00%
B 55974 46594 1 1 0.00% 0.00%
C 55974 46594 5 5 0.01% 0.01%
D 55974 46589 294 294 0.53% 0.63%

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 13 254 78334 137.98 2529 2490 549.7
A 8 192 62856 109.82 2529 2490 549.7
A 0 226 15892 24.38 2529 2490 549.7
B 10 245 456065 934.81 2559 2505 485.2
B 15 32 233269 475.62 2559 2505 485.2
B 0 230 94997 190.63 2559 2505 485.2
C 2 16 280234 477.52 2457 2454 581.7
C 15 208 79262 132.04 2457 2454 581.7
C 10 22 46855 76.33 2457 2454 581.7
D 1 52 5685455 10257.15 2408 2334 554.1
D 6 112 762052 1371.17 2408 2334 554.1
D 12 227 453881 814.97 2408 2334 554.1

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