ASTROSAT CZTI

Data Quality Report

Orbit 17878

Creation date: 2024-06-27T17:42:07.730175
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_075T01_9000002660_17878cztM0_level2.evt modeM0/AS1T03_075T01_9000002660_17878cztM0_level2_quad_clean.evt
Size (bytes)493,312,320104,074,560
Size470.5 MB 99.3 MB
Events in quadrant A3,517,744662,222
Events in quadrant B3,726,389683,151
Events in quadrant C3,659,506652,102
Events in quadrant D3,534,092640,013

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154672
B0159152
C0158132
D0158823

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7384500.677140%
B73851041.408260%
C73851291.746784%
D73841101.489707%

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 9744 7387 0 0 0.00% 0.00%
B 9745 7388 8 8 0.08% 0.11%
C 9745 7388 0 0 0.00% 0.00%
D 9744 7387 30 30 0.31% 0.41%

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 0 226 7875 37.79 915 895 184.7
A 3 137 6909 32.56 915 895 184.7
A 12 194 6726 31.57 915 895 184.7
B 15 222 89387 503.42 922 899 175.8
B 12 111 21238 115.71 922 899 175.8
B 0 229 19613 106.47 922 899 175.8
C 14 238 137018 656.35 884 890 207.4
C 3 233 68868 327.76 884 890 207.4
C 13 61 6354 26.35 884 890 207.4
D 7 238 138989 601.67 878 860 229.6
D 2 234 25142 105.77 878 860 229.6
D 10 70 23813 99.98 878 860 229.6

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