ASTROSAT CZTI

Data Quality Report

Orbit 08880

Creation date: 2024-06-27T15:38:21.585642
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/AS1A03_065T01_9000001238_08880cztM0_level2.evt modeM0/AS1A03_065T01_9000001238_08880cztM0_level2_quad_clean.evt
Size (bytes)1,018,624,320171,907,200
Size971.4 MB 163.9 MB
Events in quadrant A9,058,6911,056,664
Events in quadrant B6,575,6501,086,906
Events in quadrant C6,944,3021,069,769
Events in quadrant D7,333,7931,036,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640325
B0287687
C0300577
D03116812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138592691.940977%
B13863840.605929%
C13863250.180336%
D138611461.053315%

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 15440 13867 178 178 1.15% 1.28%
B 15440 13868 12 12 0.08% 0.09%
C 15440 13868 6 6 0.04% 0.04%
D 15440 13868 100 100 0.65% 0.72%

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 8 5 2410018 7292.38 1615 1579 330.3
A 15 174 323166 973.72 1615 1579 330.3
A 5 16 84201 250.17 1615 1579 330.3
B 10 16 132898 416.35 1635 1594 315.4
B 6 51 40947 124.78 1635 1594 315.4
B 12 111 35922 108.85 1635 1594 315.4
C 9 68 704151 1904.83 1588 1592 368.8
C 8 128 15746 38.38 1588 1592 368.8
C 10 22 13241 31.58 1588 1592 368.8
D 8 195 612465 1602.8 1573 1533 381.2
D 7 71 290044 756.92 1573 1533 381.2
D 1 52 203561 530.03 1573 1533 381.2

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