ASTROSAT CZTI

Data Quality Report

Orbit 30004

Creation date: 2024-06-27T20:09:45.542585
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/AS1A10_071T01_9000004310_30004cztM0_level2.evt modeM0/AS1A10_071T01_9000004310_30004cztM0_level2_quad_clean.evt
Size (bytes)698,760,00076,144,320
Size666.4 MB 72.6 MB
Events in quadrant A3,249,064498,486
Events in quadrant B10,735,942415,212
Events in quadrant C3,400,831475,041
Events in quadrant D3,343,010469,323

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134222
B0363202
C0137932
D0139592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406310.483921%
B6406257540.196691%
C64051121.748634%
D6405320.499610%

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 7566 6407 7 7 0.09% 0.11%
B 7566 6407 1607 1607 21.24% 25.08%
C 7565 6406 0 0 0.00% 0.00%
D 7565 6406 30 30 0.40% 0.47%

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 8 192 31892 188.13 833 819 165.2
A 13 254 11497 64.65 833 819 165.2
A 3 137 8012 43.55 833 819 165.2
B 6 36 6233200 44267.01 737 719 140.8
B 6 159 1598567 11348.92 737 719 140.8
B 12 111 17059 116.06 737 719 140.8
C 14 238 155508 839.24 785 791 184.4
C 3 233 135747 732.05 785 791 184.4
C 14 254 40024 212.81 785 791 184.4
D 8 195 162478 864.18 790 774 187.1
D 10 199 109488 580.99 790 774 187.1
D 2 250 22943 118.48 790 774 187.1

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