ASTROSAT CZTI

Data Quality Report

Orbit 01070

Creation date: 2024-06-27T14:06:59.273920
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/AS1P01_998T02_9000000190_01070cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01070cztM0_level2_quad_clean.evt
Size (bytes)911,632,320102,545,280
Size869.4 MB 97.8 MB
Events in quadrant A7,006,246691,568
Events in quadrant B7,071,206699,578
Events in quadrant C6,733,282660,990
Events in quadrant D6,418,506653,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248981
B0250661
C0240431
D0231011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5716280.489853%
B5716400.699790%
C5717200.349834%
D5717330.577226%

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 6926 5717 190 190 2.74% 3.32%
B 6926 5717 215 215 3.10% 3.76%
C 6927 5718 150 150 2.17% 2.62%
D 6927 5718 188 188 2.71% 3.29%

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 13 164 162699 380.81 1772 1780 422.6
A 15 233 36116 81.25 1772 1780 422.6
A 0 253 8499 15.9 1772 1780 422.6
B 15 22 77262 176.79 1812 1821 426.7
B 5 191 51696 116.88 1812 1821 426.7
B 5 249 20046 42.71 1812 1821 426.7
C 15 241 287739 631.22 1636 1690 453.2
C 3 79 26607 54.98 1636 1690 453.2
C 3 111 23256 47.59 1636 1690 453.2
D 13 73 167894 334.37 1621 1678 497.1
D 2 216 47525 92.23 1621 1678 497.1
D 10 85 44158 85.46 1621 1678 497.1

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