ASTROSAT CZTI

Data Quality Report

Orbit 00408

Creation date: 2024-06-27T13:59:26.410646
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/AS1P01_161T03_9000000070_00408cztM0_level2.evt modeM0/AS1P01_161T03_9000000070_00408cztM0_level2_quad_clean.evt
Size (bytes)768,211,20050,742,720
Size732.6 MB 48.4 MB
Events in quadrant A5,724,099307,267
Events in quadrant B5,757,041289,399
Events in quadrant C5,488,878302,654
Events in quadrant D5,963,593287,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205482
B0206321
C0198661
D0212161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498650.100281%
B498650.100281%
C498620.040112%
D4986180.361011%

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 7051 4987 94 94 1.33% 1.88%
B 7051 4987 61 61 0.87% 1.22%
C 7051 4987 40 40 0.57% 0.80%
D 7051 4987 147 147 2.08% 2.95%

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 0 238 103444 330.8 1420 1403 308.5
A 12 243 44576 139.96 1420 1403 308.5
A 5 244 32072 99.42 1420 1403 308.5
B 0 23 57394 167.21 1436 1444 334.6
B 4 82 45402 131.37 1436 1444 334.6
B 0 220 41012 118.25 1436 1444 334.6
C 1 1 230456 617.65 1331 1382 370.9
C 9 206 12669 30.43 1331 1382 370.9
C 2 192 9829 22.78 1331 1382 370.9
D 12 237 248086 617.17 1277 1328 399.8
D 13 221 223128 554.75 1277 1328 399.8
D 1 4 170334 422.7 1277 1328 399.8

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