ASTROSAT CZTI

Data Quality Report

Orbit 28596

Creation date: 2024-06-27T19:53:49.013968
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_045T06_9000004108_28596cztM0_level2.evt modeM0/AS1A10_045T06_9000004108_28596cztM0_level2_quad_clean.evt
Size (bytes)435,939,84070,128,000
Size415.7 MB 66.9 MB
Events in quadrant A2,725,383442,946
Events in quadrant B2,808,125447,756
Events in quadrant C2,675,805433,743
Events in quadrant D4,614,502409,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118051
B0120821
C0116321
D0175821

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5574671.202009%
B55741212.170793%
C55741182.116972%
D55755109.147982%

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 5834 5574 9 9 0.15% 0.16%
B 5834 5574 12 12 0.21% 0.22%
C 5834 5575 1 1 0.02% 0.02%
D 5835 5575 392 392 6.72% 7.03%

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 15 174 85866 617.65 677 663 137.9
A 1 113 13383 92.21 677 663 137.9
A 13 254 10110 68.48 677 663 137.9
B 4 171 82322 634.52 669 652 128.7
B 5 255 42609 325.98 669 652 128.7
B 10 245 33759 257.22 669 652 128.7
C 14 238 105057 675.83 650 654 154.5
C 7 247 24637 155.25 650 654 154.5
C 0 207 7495 44.28 650 654 154.5
D 1 52 984074 6438.73 630 613 152.7
D 8 195 663299 4338.61 630 613 152.7
D 12 233 475743 3110.68 630 613 152.7

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