ASTROSAT CZTI

Data Quality Report

Orbit 11592

Creation date: 2024-06-27T16:15:36.525313
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/AS1G08_031T01_9000001702_11592cztM0_level2.evt modeM0/AS1G08_031T01_9000001702_11592cztM0_level2_quad_clean.evt
Size (bytes)294,045,12038,600,640
Size280.4 MB 36.8 MB
Events in quadrant A2,178,097224,069
Events in quadrant B2,481,976225,830
Events in quadrant C1,882,892228,630
Events in quadrant D2,096,992215,421

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088571
B097691
C080791
D085081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3884320.823893%
B38841373.527291%
C388480.205973%
D3884421.081359%

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 3885 3885 6 6 0.15% 0.15%
B 3885 3885 71 71 1.83% 1.83%
C 3885 3885 0 0 0.00% 0.00%
D 3885 3885 37 37 0.95% 0.95%

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 8 5 90339 895.82 491 481 100.3
A 1 162 73981 732.74 491 481 100.3
A 1 178 42820 422.09 491 481 100.3
B 4 239 430421 4580.57 490 479 93.9
B 3 64 36222 380.8 490 479 93.9
B 11 51 31216 327.47 490 479 93.9
C 13 61 3489 27.0 482 485 111.2
C 12 4 1480 8.94 482 485 111.2
C 3 202 1208 6.5 482 485 111.2
D 1 52 147108 1201.04 471 462 122.1
D 8 195 91627 746.65 471 462 122.1
D 13 104 16580 132.01 471 462 122.1

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