ASTROSAT CZTI

Data Quality Report

Orbit 36960

Creation date: 2024-06-27T21:33:37.471289
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/AS1C07_001T10_9000005252_36960cztM0_level2.evt modeM0/AS1C07_001T10_9000005252_36960cztM0_level2_quad_clean.evt
Size (bytes)432,322,56092,522,880
Size412.3 MB 88.2 MB
Events in quadrant A2,823,145603,954
Events in quadrant B3,041,771604,354
Events in quadrant C3,257,200602,101
Events in quadrant D3,574,665584,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123273
B0128122
C0133772
D0147302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5824420.721154%
B5824280.480769%
C5824771.322115%
D58241632.798764%

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 7317 5825 27 27 0.37% 0.46%
B 7317 5825 9 9 0.12% 0.15%
C 7317 5825 56 56 0.77% 0.96%
D 7317 5825 148 148 2.02% 2.54%

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 10 83 249259 1940.73 628 616 128.1
A 15 174 65488 506.35 628 616 128.1
A 15 237 37137 285.06 628 616 128.1
B 0 221 83224 693.33 626 610 119.2
B 0 155 77467 645.02 626 610 119.2
B 0 219 62395 518.53 626 610 119.2
C 15 214 251819 1742.69 615 619 144.1
C 14 254 245224 1696.94 615 619 144.1
C 0 10 225743 1561.79 615 619 144.1
D 12 17 749000 4998.48 613 596 149.7
D 2 250 178910 1190.93 613 596 149.7
D 2 249 76993 510.24 613 596 149.7

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