ASTROSAT CZTI

Data Quality Report

Orbit 12491

Creation date: 2024-06-27T16:28:08.471815
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_174T01_9000001850_12491cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12491cztM0_level2_quad_clean.evt
Size (bytes)458,579,52090,936,000
Size437.3 MB 86.7 MB
Events in quadrant A3,534,612588,514
Events in quadrant B3,390,357610,612
Events in quadrant C2,945,249594,457
Events in quadrant D3,619,238549,813

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144452
B0138531
C0123071
D0147571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5873480.817300%
B5873801.362166%
C5873280.476758%
D5873580.987570%

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 7234 5875 6 6 0.08% 0.10%
B 7234 5875 10 10 0.14% 0.17%
C 7234 5875 4 4 0.06% 0.07%
D 7234 5875 50 50 0.69% 0.85%

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 12 189 183543 1189.97 756 742 153.6
A 1 162 138723 898.21 756 742 153.6
A 1 178 86041 555.27 756 742 153.6
B 4 239 158063 1096.82 766 749 143.4
B 0 219 72169 497.95 766 749 143.4
B 0 197 63599 438.2 766 749 143.4
C 15 208 53968 312.12 741 751 170.5
C 13 61 5304 26.7 741 751 170.5
C 14 234 2327 9.24 741 751 170.5
D 1 52 608787 3465.41 726 707 175.5
D 8 195 107141 606.56 726 707 175.5
D 7 80 67899 382.92 726 707 175.5

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