ASTROSAT CZTI

Data Quality Report

Orbit 04100

Creation date: 2024-06-27T14:37:25.694829
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/AS1G05_191T01_9000000524_04100cztM0_level2.evt modeM0/AS1G05_191T01_9000000524_04100cztM0_level2_quad_clean.evt
Size (bytes)506,485,440101,551,680
Size483.0 MB 96.8 MB
Events in quadrant A4,199,356643,370
Events in quadrant B3,699,317648,099
Events in quadrant C3,438,800645,320
Events in quadrant D3,496,421621,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174462
B0158861
C0154191
D0158951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74352603.496974%
B74352453.295225%
C74351051.412239%
D74351291.735037%

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 7490 7436 12 12 0.16% 0.16%
B 7490 7435 1 1 0.01% 0.01%
C 7490 7437 0 0 0.00% 0.00%
D 7490 7435 34 34 0.45% 0.46%

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 0 199 673400 3691.51 887 868 182.2
A 0 226 68301 370.14 887 868 182.2
A 8 15 25035 132.65 887 868 182.2
B 3 0 102258 586.4 901 882 172.9
B 10 16 50822 288.87 901 882 172.9
B 15 204 21565 119.64 901 882 172.9
C 8 128 22303 105.08 870 877 203.9
C 8 144 8785 38.78 870 877 203.9
C 8 112 8211 35.97 870 877 203.9
D 10 172 110622 521.74 862 837 210.4
D 13 239 76969 361.81 862 837 210.4
D 2 14 36239 168.24 862 837 210.4

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