ASTROSAT CZTI

Data Quality Report

Orbit 20161112_G06_033T01_9000000792_level2

Creation date: 2025-11-07T17:52:41.271107
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/AS1G06_033T01_9000000792cztM0_level2.fits modeM0/AS1G06_033T01_9000000792cztM0_level2_quad_clean.evt
Size (bytes)687,695,040628,021,440
Size655.8 MB 598.9 MB
Events in quadrant A4,073,9323,557,529
Events in quadrant B4,010,2823,643,843
Events in quadrant C4,104,7363,508,510
Events in quadrant D3,468,4003,142,302

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01869870
B01650050
C01581800
D01861580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015340
B015340
C015360
D015360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7522822512.992237%
B7539314751.956415%
C753936130.813073%
D7534333234.410496%

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 118432 75883 0 0 0.00% 0.00%
B 118432 75982 0 0 0.00% 0.00%
C 118432 76020 0 0 0.00% 0.00%
D 118432 75948 0 0 0.00% 0.00%

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 14 188 4047 11.32 1057 983 270.7
A 0 29 4034 11.27 1057 983 270.7
A 7 110 3501 9.3 1057 983 270.7
B 2 9 3508 11.64 1058 1003 215.3
B 12 226 2774 8.23 1058 1003 215.3
B 14 254 2744 8.09 1058 1003 215.3
C 1 81 3178 7.51 1083 999 290.2
C 1 80 3148 7.4 1083 999 290.2
C 12 241 2927 6.64 1083 999 290.2
D 3 14 2694 6.67 988 892 270.2
D 11 82 2568 6.2 988 892 270.2
D 4 160 2518 6.02 988 892 270.2

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