ASTROSAT CZTI

Data Quality Report

Orbit 14818

Creation date: 2024-06-27T17:00:05.613325
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/AS1G08_010T02_9000002188_14818cztM0_level2.evt modeM0/AS1G08_010T02_9000002188_14818cztM0_level2_quad_clean.evt
Size (bytes)483,174,72083,954,880
Size460.8 MB 80.1 MB
Events in quadrant A3,341,836533,569
Events in quadrant B3,704,121529,133
Events in quadrant C3,422,639520,353
Events in quadrant D3,728,075510,893

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139403
B0150012
C0140612
D0153022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6423661.027557%
B64231071.665888%
C6423570.887436%
D64231211.883855%

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 7594 6425 2 2 0.03% 0.03%
B 7594 6425 21 21 0.28% 0.33%
C 7594 6425 1 1 0.01% 0.02%
D 7594 6425 53 53 0.70% 0.82%

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 12 189 51341 294.56 851 834 171.5
A 9 143 10532 56.56 851 834 171.5
A 0 226 7729 40.21 851 834 171.5
B 3 64 176920 1114.8 837 816 158.0
B 0 189 99253 623.14 837 816 158.0
B 0 229 41518 257.66 837 816 158.0
C 3 233 242064 1291.73 814 821 186.8
C 13 61 5996 27.71 814 821 186.8
C 14 234 4842 21.53 814 821 186.8
D 13 104 333051 1713.43 816 798 193.9
D 7 254 162552 834.16 816 798 193.9
D 10 70 111678 571.81 816 798 193.9

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