ASTROSAT CZTI

Data Quality Report

Orbit 51714

Creation date: 2025-04-22T12:01:22.050202
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/AS1A13_031T01_9000006462_51714cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51714cztM0_level2_quad_clean.evt
Size (bytes)1,310,342,400226,975,680
Size1.2 GB 216.5 MB
Events in quadrant A14,381,1531,443,009
Events in quadrant B10,813,8501,619,104
Events in quadrant C13,490,1431,322,327
Events in quadrant D8,577,9791,378,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537603
B0430643
C0513813
D0368163

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1606713168.190701%
B160679105.663783%
C16066189711.807544%
D160662561.593427%

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 19437 16069 915 915 4.71% 5.69%
B 19437 16070 480 480 2.47% 2.99%
C 19436 16068 1413 1413 7.27% 8.79%
D 19436 16069 149 149 0.77% 0.93%

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 3 78 3156469 7628.86 1698 1658 413.5
A 3 14 2406845 5816.15 1698 1658 413.5
A 12 3 1122524 2710.44 1698 1658 413.5
B 1 223 1245796 3429.11 1705 1641 362.8
B 10 254 718491 1975.77 1705 1641 362.8
B 8 128 525871 1444.87 1705 1641 362.8
C 12 254 1916585 4332.91 1628 1615 442.0
C 9 38 1576396 3563.18 1628 1615 442.0
C 15 231 1107446 2502.11 1628 1615 442.0
D 3 12 447751 953.81 1689 1627 467.7
D 5 157 338451 720.12 1689 1627 467.7
D 8 176 178237 377.59 1689 1627 467.7

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