ASTROSAT CZTI

Data Quality Report

Orbit 20151008_P01_120T01_9000000006_level2

Creation date: 2025-01-05T03:45:41.373738
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_120T01_9000000006cztM0_level2.fits modeM0/AS1P01_120T01_9000000006cztM0_level2_quad_clean.evt
Size (bytes)450,524,160212,060,160
Size429.7 MB 202.2 MB
Events in quadrant A2,542,490633,969
Events in quadrant B2,544,870681,841
Events in quadrant C2,588,712660,781
Events in quadrant D2,094,496569,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011700
B011680
C011660
D011680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01970
B01970
C01950
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02569550
B02574450
C02333440
D02607220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A564916831.209042%
B564685400.956294%
C56622940.166013%
D5597216332.917530%

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 105551 56794 0 0 0.00% 0.00%
B 105552 56772 0 0 0.00% 0.00%
C 105552 56939 0 0 0.00% 0.00%
D 105552 56212 0 0 0.00% 0.00%

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 7 110 2486 12.14 662 618 153.9
A 0 29 2226 10.45 662 618 153.9
A 0 30 1760 7.42 662 618 153.9
B 2 9 2112 11.77 677 642 124.9
B 14 254 1713 8.57 677 642 124.9
B 5 225 1589 7.58 677 642 124.9
C 3 203 2170 9.0 685 632 170.8
C 3 202 1869 7.24 685 632 170.8
C 3 187 1839 7.06 685 632 170.8
D 6 231 1662 7.51 605 554 147.5
D 3 14 1649 7.42 605 554 147.5
D 6 114 1580 6.96 605 554 147.5

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