ASTROSAT CZTI

Data Quality Report

Orbit 19668

Creation date: 2024-06-27T18:05:25.117303
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_9000002928_19668cztM0_level2.evt modeM0/AS1T03_005T01_9000002928_19668cztM0_level2_quad_clean.evt
Size (bytes)504,449,28092,862,720
Size481.1 MB 88.6 MB
Events in quadrant A3,093,867604,434
Events in quadrant B3,170,309620,444
Events in quadrant C3,141,131584,399
Events in quadrant D5,435,905554,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133522
B0135632
C0134202
D0204732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429320.497745%
B6429290.451081%
C6429390.606626%
D64283625.631612%

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 7624 6430 9 9 0.12% 0.14%
B 7624 6430 9 9 0.12% 0.14%
C 7624 6429 0 0 0.00% 0.00%
D 7623 6429 324 324 4.25% 5.04%

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 13 252 39544 245.67 786 772 157.8
A 11 29 19284 117.3 786 772 157.8
A 4 2 8411 48.4 786 772 157.8
B 7 220 35122 230.26 788 768 149.2
B 4 216 25218 163.87 788 768 149.2
B 12 111 17720 113.62 788 768 149.2
C 14 238 119827 675.98 756 762 176.1
C 3 233 64815 363.66 756 762 176.1
C 9 221 8774 45.49 756 762 176.1
D 1 20 1569868 8623.42 742 719 182.0
D 12 218 748252 4108.15 742 719 182.0
D 10 199 137606 752.28 742 719 182.0

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