ASTROSAT CZTI

Data Quality Report

Orbit 16964

Creation date: 2024-06-27T17:30:07.568505
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/AS1A05_188T01_9000002520_16964cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16964cztM0_level2_quad_clean.evt
Size (bytes)537,010,56097,623,360
Size512.1 MB 93.1 MB
Events in quadrant A3,166,948650,414
Events in quadrant B5,382,861591,027
Events in quadrant C3,505,734650,478
Events in quadrant D3,783,954627,681

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130462
B0200443
C0141792
D0150962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6252300.479846%
B625183613.373860%
C6251761.215805%
D6251761.215805%

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 7588 6254 0 0 0.00% 0.00%
B 7587 6253 688 688 9.07% 11.00%
C 7587 6253 0 0 0.00% 0.00%
D 7587 6253 49 49 0.65% 0.78%

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 20027 118.38 819 803 162.4
A 0 226 7227 39.56 819 803 162.4
A 12 194 6001 32.01 819 803 162.4
B 3 64 2180455 15422.91 764 746 141.3
B 15 35 78076 547.16 764 746 141.3
B 0 197 49172 342.65 764 746 141.3
C 3 233 220501 1175.46 809 817 186.9
C 14 238 124786 663.32 809 817 186.9
C 13 61 5751 26.4 809 817 186.9
D 1 52 425875 2172.38 809 788 195.7
D 11 129 111095 563.72 809 788 195.7
D 1 255 77530 392.19 809 788 195.7

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