ASTROSAT CZTI

Data Quality Report

Orbit 09497

Creation date: 2024-06-27T15:46:54.445724
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_230T06_9000001350_09497cztM0_level2.evt modeM0/AS1G05_230T06_9000001350_09497cztM0_level2_quad_clean.evt
Size (bytes)499,769,28095,621,760
Size476.6 MB 91.2 MB
Events in quadrant A4,246,222616,110
Events in quadrant B3,439,962619,694
Events in quadrant C3,296,662601,206
Events in quadrant D3,694,541588,319

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172253
B0145772
C0144862
D0155802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67471201.778568%
B6747801.185712%
C6747550.815177%
D67471101.630354%

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 7707 6748 3 3 0.04% 0.04%
B 7707 6748 9 9 0.12% 0.13%
C 7707 6748 26 26 0.34% 0.39%
D 7707 6748 73 73 0.95% 1.08%

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 5 479430 2851.4 824 809 167.9
A 1 162 268573 1595.21 824 809 167.9
A 1 178 116761 690.79 824 809 167.9
B 0 214 105810 669.21 821 802 156.9
B 4 80 58421 367.2 821 802 156.9
B 0 246 24820 153.07 821 802 156.9
C 4 254 128502 697.16 787 790 183.2
C 14 234 59855 322.42 787 790 183.2
C 9 68 38961 208.37 787 790 183.2
D 12 233 422138 2052.52 789 771 205.3
D 7 71 101321 489.79 789 771 205.3
D 8 195 39995 191.06 789 771 205.3

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