ASTROSAT CZTI

Data Quality Report

Orbit 04402

Creation date: 2024-06-27T14:41:29.025010
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/AS1G05_230T02_9000000548_04402cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04402cztM0_level2_quad_clean.evt
Size (bytes)423,866,88069,707,520
Size404.2 MB 66.5 MB
Events in quadrant A2,816,843425,516
Events in quadrant B3,653,688414,055
Events in quadrant C2,816,548420,942
Events in quadrant D3,122,494411,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128712
B0151171
C0130661
D0140441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62751221.944223%
B62752564.079681%
C62751151.832669%
D62751472.342629%

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 7225 6276 2 2 0.03% 0.03%
B 7225 6276 78 78 1.08% 1.24%
C 7225 6276 2 2 0.03% 0.03%
D 7225 6276 43 43 0.60% 0.69%

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 0 50 39609 271.63 710 694 143.3
A 13 14 22460 151.93 710 694 143.3
A 13 251 8098 51.68 710 694 143.3
B 10 16 476511 3552.05 709 690 134.0
B 14 167 348606 2597.22 709 690 134.0
B 8 3 35251 258.0 709 690 134.0
C 12 4 38812 240.52 690 692 158.5
C 9 247 37825 234.29 690 692 158.5
C 9 16 29073 179.07 690 692 158.5
D 13 53 321129 1925.2 691 672 166.5
D 13 239 70234 417.9 691 672 166.5
D 9 35 55090 326.92 691 672 166.5

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