ASTROSAT CZTI

Data Quality Report

Orbit 12670

Creation date: 2024-06-27T16:30:50.783057
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_9000001876_12670cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12670cztM0_level2_quad_clean.evt
Size (bytes)525,530,88085,423,680
Size501.2 MB 81.5 MB
Events in quadrant A3,427,026535,633
Events in quadrant B5,023,320487,023
Events in quadrant C3,358,871537,543
Events in quadrant D3,606,582513,934

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151532
B0196611
C0149981
D0157851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7359450.611496%
B73596178.384291%
C7359260.353309%
D7359340.462019%

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 7710 7361 0 0 0.00% 0.00%
B 7709 7359 440 440 5.71% 5.98%
C 7710 7362 0 0 0.00% 0.00%
D 7710 7361 14 14 0.18% 0.19%

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 71117 392.8 872 855 178.9
A 0 226 7560 37.48 872 855 178.9
A 12 194 6660 32.45 872 855 178.9
B 4 239 1436218 8880.57 834 813 161.6
B 3 64 116799 717.58 834 813 161.6
B 11 51 91190 559.14 834 813 161.6
C 15 208 18256 87.42 856 863 199.0
C 13 61 6353 27.59 856 863 199.0
C 14 234 3623 13.87 856 863 199.0
D 1 52 122632 602.77 841 823 202.1
D 10 199 84995 416.52 841 823 202.1
D 10 157 84278 412.97 841 823 202.1

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