ASTROSAT CZTI

Data Quality Report

Orbit 37004

Creation date: 2024-06-27T21:34:07.477055
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/AS1A11_079T01_9000005254_37004cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_37004cztM0_level2_quad_clean.evt
Size (bytes)307,944,00040,083,840
Size293.7 MB 38.2 MB
Events in quadrant A2,009,555231,830
Events in quadrant B2,766,529229,226
Events in quadrant C2,314,702235,229
Events in quadrant D1,954,647226,881

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087011
B0110471
C094651
D088111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4115190.461725%
B41152004.860267%
C4115481.166464%
D4115210.510328%

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 5698 4116 13 13 0.23% 0.32%
B 5698 4116 124 124 2.18% 3.01%
C 5698 4116 53 53 0.93% 1.29%
D 5698 4116 18 18 0.32% 0.44%

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 10 83 139085 1477.38 460 450 93.8
A 7 16 45631 481.48 460 450 93.8
A 9 143 28640 300.41 460 450 93.8
B 5 184 541857 6163.8 450 439 87.8
B 14 252 304490 3461.48 450 439 87.8
B 0 213 48413 546.16 450 439 87.8
C 15 214 171691 1613.04 447 449 106.2
C 15 159 141132 1325.19 447 449 106.2
C 14 254 84690 793.52 447 449 106.2
D 1 52 92090 830.6 447 436 110.3
D 2 250 69052 621.82 447 436 110.3
D 12 17 35901 321.39 447 436 110.3

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