ASTROSAT CZTI

Data Quality Report

Orbit 18236

Creation date: 2024-06-27T17:47:09.713217
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/AS1C04_001T01_9000002716_18236cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18236cztM0_level2_quad_clean.evt
Size (bytes)387,397,440117,720,000
Size369.5 MB 112.3 MB
Events in quadrant A2,843,020805,409
Events in quadrant B2,813,599822,536
Events in quadrant C2,713,651774,264
Events in quadrant D2,966,596757,291

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122131
B0120621
C0118691
D0127882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5811270.464636%
B5812180.309704%
C5812280.481762%
D5811480.826020%

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 7091 5812 15 15 0.21% 0.26%
B 7092 5813 0 0 0.00% 0.00%
C 7092 5813 0 0 0.00% 0.00%
D 7091 5812 33 33 0.47% 0.57%

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 105743 753.18 703 690 139.5
A 13 210 28717 200.94 703 690 139.5
A 4 2 7716 50.37 703 690 139.5
B 0 189 23476 172.76 705 688 131.9
B 12 111 14734 106.49 705 688 131.9
B 0 198 13097 94.07 705 688 131.9
C 14 238 107075 689.77 667 672 154.3
C 3 233 5128 28.89 667 672 154.3
C 13 61 4761 26.51 667 672 154.3
D 7 238 111395 697.96 668 651 158.7
D 7 96 103011 645.12 668 651 158.7
D 14 34 95214 595.98 668 651 158.7

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