ASTROSAT CZTI

Data Quality Report

Orbit 48402

Creation date: 2024-09-09T12:22:12.697499
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/AS1A13_029T01_9000006426_48402cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48402cztM0_level2_quad_clean.evt
Size (bytes)472,973,760112,132,800
Size451.1 MB 106.9 MB
Events in quadrant A7,119,119739,407
Events in quadrant B3,334,704778,241
Events in quadrant C2,988,950741,967
Events in quadrant D3,546,494669,657

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262311
B0144523
C0137201
D0153711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66852023.021690%
B6685791.181750%
C6685420.628272%
D66851372.049364%

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 7835 6686 72 72 0.92% 1.08%
B 7835 6686 12 12 0.15% 0.18%
C 7835 6686 5 5 0.06% 0.07%
D 7835 6686 84 84 1.07% 1.26%

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 10 83 4052133 25927.22 753 738 156.3
A 13 248 110083 699.76 753 738 156.3
A 0 31 39071 245.32 753 738 156.3
B 12 16 227407 1526.53 753 732 148.5
B 4 21 96364 644.03 753 732 148.5
B 12 111 18619 120.46 753 732 148.5
C 12 2 29807 163.89 747 752 177.3
C 15 208 27166 148.99 747 752 177.3
C 14 254 11525 60.77 747 752 177.3
D 2 249 430667 2314.87 741 718 185.7
D 5 222 129727 694.59 741 718 185.7
D 2 31 39838 210.62 741 718 185.7

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