ASTROSAT CZTI

Data Quality Report

Orbit 07876

Creation date: 2024-06-27T15:25:09.122077
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/AS1A02_071T01_9000001078_07876cztM0_level2.evt modeM0/AS1A02_071T01_9000001078_07876cztM0_level2_quad_clean.evt
Size (bytes)487,869,12091,077,120
Size465.3 MB 86.9 MB
Events in quadrant A3,241,333576,582
Events in quadrant B3,337,972594,803
Events in quadrant C3,869,507578,353
Events in quadrant D3,869,914540,070

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142542
B0144421
C0159271
D0161721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67161281.905896%
B67161542.293032%
C67161402.084574%
D67163555.285884%

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 7491 6717 10 10 0.13% 0.15%
B 7491 6717 27 27 0.36% 0.40%
C 7491 6717 1 1 0.01% 0.01%
D 7491 6717 215 215 2.87% 3.20%

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 2 79 105704 652.41 788 771 160.8
A 15 239 68834 423.18 788 771 160.8
A 3 1 14952 88.17 788 771 160.8
B 4 239 159993 1043.69 798 778 152.6
B 0 214 30725 196.31 798 778 152.6
B 4 81 27950 178.12 798 778 152.6
C 1 16 814468 4461.2 781 783 182.4
C 12 4 6152 29.44 781 783 182.4
C 13 61 6000 28.6 781 783 182.4
D 14 34 747321 3954.18 768 744 188.8
D 2 152 76571 401.61 768 744 188.8
D 7 55 28800 148.6 768 744 188.8

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