ASTROSAT CZTI

Data Quality Report

Orbit 33866

Creation date: 2024-06-27T20:53:27.212412
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_046T03_9000004834_33866cztM0_level2.evt modeM0/AS1A11_046T03_9000004834_33866cztM0_level2_quad_clean.evt
Size (bytes)1,465,810,560206,712,000
Size1.4 GB 197.1 MB
Events in quadrant A11,549,3691,190,029
Events in quadrant B9,080,6451,344,874
Events in quadrant C8,574,5761,344,624
Events in quadrant D14,087,3861,254,591

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0453785
B0379404
C0356244
D0533498

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16312211812.984306%
B163124152.544139%
C163121190.729524%
D163118745.358347%

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 25734 16317 1614 1614 6.27% 9.89%
B 25734 16317 233 233 0.91% 1.43%
C 25734 16317 76 76 0.30% 0.47%
D 25734 16316 676 676 2.63% 4.14%

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 15 169 4757253 13650.61 1743 1707 348.4
A 13 6 41229 113.44 1743 1707 348.4
A 13 254 25176 67.37 1743 1707 348.4
B 5 172 1102923 3163.36 1838 1789 348.1
B 15 222 213476 608.14 1838 1789 348.1
B 4 251 136969 388.35 1838 1789 348.1
C 15 214 692332 1668.7 1808 1825 413.8
C 9 187 298964 718.07 1808 1825 413.8
C 0 10 252644 606.14 1808 1825 413.8
D 8 195 3803827 8775.78 1776 1728 433.2
D 13 249 1214060 2798.23 1776 1728 433.2
D 2 250 645372 1485.62 1776 1728 433.2

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