ASTROSAT CZTI

Data Quality Report

Orbit 53415

Creation date: 2025-08-13T04:56:35.895888
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/AS1C09_011T09_9000006494_53415cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53415cztM0_level2_quad_clean.evt
Size (bytes)904,884,48082,653,120
Size863.0 MB 78.8 MB
Events in quadrant A4,772,480650,258
Events in quadrant B7,250,258632,830
Events in quadrant C16,988,495120,611
Events in quadrant D3,942,571610,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191142
B0264452
C0550062
D0168142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70003555.071429%
B6999118916.988141%
C6999585583.654808%
D70001101.571429%

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 7655 7000 299 299 3.91% 4.27%
B 7654 6999 849 849 11.09% 12.13%
C 7654 6999 5715 5715 74.67% 81.65%
D 7655 7001 84 84 1.10% 1.20%

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 3 63 1260561 7015.99 718 700 179.6
A 7 206 190868 1059.02 718 700 179.6
A 15 174 145015 803.67 718 700 179.6
B 4 206 1540969 10625.12 684 660 145.0
B 4 171 1102022 7597.24 684 660 145.0
B 15 20 630198 4342.58 684 660 145.0
C 1 241 11904206 135324.99 317 313 88.0
C 15 224 2214040 25165.93 317 313 88.0
C 9 38 542938 6168.63 317 313 88.0
D 0 18 327721 1622.97 710 678 201.5
D 2 153 301358 1492.14 710 678 201.5
D 8 176 102519 505.39 710 678 201.5

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