ASTROSAT CZTI

Data Quality Report

Orbit 04990

Creation date: 2024-06-27T14:49:48.094737
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/AS1G05_115T01_9000000634_04990cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04990cztM0_level2_quad_clean.evt
Size (bytes)1,037,851,200184,489,920
Size989.8 MB 175.9 MB
Events in quadrant A6,893,5061,135,013
Events in quadrant B7,475,2251,148,293
Events in quadrant C6,659,5051,153,140
Events in quadrant D9,370,7761,098,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312554
B0325383
C0307623
D0388973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15256730.478500%
B152561460.957001%
C15256450.294966%
D152566524.273728%

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 17075 15255 11 11 0.06% 0.07%
B 17075 15255 30 30 0.18% 0.20%
C 17075 15256 0 0 0.00% 0.00%
D 17075 15255 447 447 2.62% 2.93%

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 8 15 156445 438.84 1731 1693 352.6
A 0 50 51491 141.22 1731 1693 352.6
A 12 194 17386 44.5 1731 1693 352.6
B 0 219 443700 1315.09 1754 1707 336.1
B 8 3 124844 366.38 1754 1707 336.1
B 4 48 51115 147.01 1754 1707 336.1
C 13 61 14058 31.51 1702 1707 392.0
C 9 54 10773 23.13 1702 1707 392.0
C 12 4 6095 11.19 1702 1707 392.0
D 2 33 1037141 2532.08 1675 1623 409.0
D 13 235 718030 1751.78 1675 1623 409.0
D 2 136 288702 701.97 1675 1623 409.0

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