ASTROSAT CZTI

Data Quality Report

Orbit 18120

Creation date: 2024-06-27T17:45:12.287503
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/AS1A05_019T01_9000002688_18120cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18120cztM0_level2_quad_clean.evt
Size (bytes)485,346,24089,559,360
Size462.9 MB 85.4 MB
Events in quadrant A3,548,914585,137
Events in quadrant B3,575,464589,128
Events in quadrant C3,332,186550,199
Events in quadrant D3,811,251544,843

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146322
B0145952
C0139112
D0152783

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63431372.159861%
B63431312.065269%
C63431211.907615%
D63421251.970987%

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 7563 6343 20 20 0.26% 0.32%
B 7563 6343 27 27 0.36% 0.43%
C 7563 6343 1 1 0.01% 0.02%
D 7562 6342 45 45 0.60% 0.71%

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 4 2 177161 1022.14 871 857 172.5
A 15 174 25194 141.1 871 857 172.5
A 0 226 7714 39.75 871 857 172.5
B 5 172 90194 551.11 864 846 162.1
B 4 216 33734 202.86 864 846 162.1
B 0 229 29915 179.3 864 846 162.1
C 14 238 129022 680.84 813 819 188.3
C 9 160 13906 69.5 813 819 188.3
C 9 176 10216 49.9 813 819 188.3
D 11 176 410498 2032.09 832 811 201.6
D 7 238 109901 541.1 832 811 201.6
D 1 52 74734 366.67 832 811 201.6

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