ASTROSAT CZTI

Data Quality Report

Orbit 19564

Creation date: 2024-06-27T18:04:15.606693
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/AS1T03_005T01_9000002908_19564cztM0_level2.evt modeM0/AS1T03_005T01_9000002908_19564cztM0_level2_quad_clean.evt
Size (bytes)527,083,20092,096,640
Size502.7 MB 87.8 MB
Events in quadrant A3,090,692596,645
Events in quadrant B3,264,343604,805
Events in quadrant C3,283,893572,680
Events in quadrant D5,864,274542,444

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137822
B0141562
C0141002
D0222233

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6776230.339433%
B6776410.605077%
C6776570.841204%
D67753435.062731%

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 7721 6777 0 0 0.00% 0.00%
B 7721 6777 14 14 0.18% 0.21%
C 7721 6777 1 1 0.01% 0.01%
D 7720 6776 277 277 3.59% 4.09%

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 15 174 11055 63.04 799 781 163.0
A 13 254 8612 48.05 799 781 163.0
A 0 226 6899 37.54 799 781 163.0
B 3 64 54842 352.37 799 778 153.4
B 0 197 24661 155.66 799 778 153.4
B 0 230 23355 147.15 799 778 153.4
C 14 238 118952 652.17 768 774 181.2
C 3 233 68410 373.25 768 774 181.2
C 7 247 39103 211.52 768 774 181.2
D 7 238 1160806 6257.1 760 737 185.4
D 1 52 888957 4790.82 760 737 185.4
D 12 218 632539 3407.77 760 737 185.4

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