ASTROSAT CZTI

Data Quality Report

Orbit 12203

Creation date: 2024-06-27T16:23:46.852457
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/AS1A04_066T01_9000001802_12203cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12203cztM0_level2_quad_clean.evt
Size (bytes)534,965,760115,597,440
Size510.2 MB 110.2 MB
Events in quadrant A3,555,857801,188
Events in quadrant B4,975,673746,801
Events in quadrant C2,805,676788,280
Events in quadrant D4,455,916743,764

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146012
B0188461
C0125621
D0173651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60221342.225174%
B602278112.969113%
C6022310.514779%
D60223565.911657%

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 7213 6024 10 10 0.14% 0.17%
B 7213 6024 406 406 5.63% 6.74%
C 7213 6024 7 7 0.10% 0.12%
D 7213 6024 246 246 3.41% 4.08%

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 1 162 214611 1478.44 718 703 144.7
A 8 15 147087 1011.74 718 703 144.7
A 1 178 124224 853.72 718 703 144.7
B 4 239 1423061 11382.89 671 656 125.0
B 10 16 309559 2472.02 671 656 125.0
B 3 64 195085 1555.93 671 656 125.0
C 15 208 67997 431.17 684 688 156.1
C 5 112 51171 323.38 684 688 156.1
C 4 175 15757 96.53 684 688 156.1
D 2 33 575011 3571.3 674 654 160.8
D 1 52 446840 2774.35 674 654 160.8
D 13 104 218853 1356.74 674 654 160.8

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