ASTROSAT CZTI

Data Quality Report

Orbit 15307

Creation date: 2024-06-27T17:06:39.884867
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/AS1T02_073T01_9000002260_15307cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15307cztM0_level2_quad_clean.evt
Size (bytes)813,732,480139,242,240
Size776.0 MB 132.8 MB
Events in quadrant A5,847,982846,998
Events in quadrant B5,995,533855,725
Events in quadrant C6,110,999832,908
Events in quadrant D5,831,550806,196

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257863
B0259852
C0261052
D0265062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126631281.010819%
B126631561.231936%
C126631080.852878%
D126631371.081892%

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 13899 12664 6 6 0.04% 0.05%
B 13899 12664 6 6 0.04% 0.05%
C 13899 12664 7 7 0.05% 0.06%
D 13899 12664 41 41 0.29% 0.32%

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 13 252 36220 114.68 1498 1463 303.1
A 4 2 21777 67.03 1498 1463 303.1
A 7 32 18583 56.49 1498 1463 303.1
B 10 16 44178 147.31 1499 1461 290.0
B 0 189 39939 132.69 1499 1461 290.0
B 12 111 35504 117.4 1499 1461 290.0
C 3 233 354439 1053.57 1450 1458 335.0
C 4 254 105537 310.65 1450 1458 335.0
C 13 61 10449 26.84 1450 1458 335.0
D 2 33 246912 687.94 1452 1406 356.9
D 10 70 52531 143.26 1452 1406 356.9
D 2 234 48276 131.34 1452 1406 356.9

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