ASTROSAT CZTI

Data Quality Report

Orbit 20220802_C07_015T01_9000005256_level2

Creation date: 2022-08-04T17:37:00.623465
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/AS1C07_015T01_9000005256cztM0_level2_bc.evt modeM0/AS1C07_015T01_9000005256cztM0_level2_quad_clean.evt
Size (bytes)705,608,640233,879,040
Size672.9 MB 223.0 MB
Events in quadrant A3,567,9161,549,280
Events in quadrant B6,412,8261,496,293
Events in quadrant C3,825,3561,536,218
Events in quadrant D6,519,6451,449,831

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0314220
B0422410
C0319230
D0437310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15236190.124705%
B1523615229.989499%
C15236280.183775%
D152367464.896298%

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 19174 15239 4 4 0.02% 0.03%
B 19174 15236 288 288 1.50% 1.89%
C 19174 15236 8 8 0.04% 0.05%
D 19174 15237 90 90 0.47% 0.59%

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 10 83 512279 3041.81 740 726 168.2
A 15 174 74148 436.58 740 726 168.2
A 12 189 60853 357.53 740 726 168.2
B 5 184 2523205 16923.64 721 703 149.1
B 5 172 535130 3585.51 721 703 149.1
B 0 213 178087 1190.08 721 703 149.1
C 15 214 616588 3667.7 723 716 167.9
C 0 10 131921 781.36 723 716 167.9
C 14 254 61136 359.82 723 716 167.9
D 1 52 884045 5043.66 720 696 175.1
D 2 153 705016 4021.45 720 696 175.1
D 2 250 644507 3675.97 720 696 175.1

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