ASTROSAT CZTI

Data Quality Report

Orbit 10838

Creation date: 2024-06-27T16:04:22.050675
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/AS1A03_086T01_9000001568_10838cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10838cztM0_level2_quad_clean.evt
Size (bytes)508,777,92077,529,600
Size485.2 MB 73.9 MB
Events in quadrant A5,015,736492,212
Events in quadrant B4,290,963484,178
Events in quadrant C2,660,621497,755
Events in quadrant D3,054,120474,737

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187082
B0164221
C0116311
D0127701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A570463711.167602%
B57044527.924264%
C5704250.438289%
D5704771.349930%

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 6789 5705 480 480 7.07% 8.41%
B 6789 5705 270 270 3.98% 4.73%
C 6789 5705 0 0 0.00% 0.00%
D 6789 5705 35 35 0.52% 0.61%

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 2330933 16651.89 683 671 139.9
A 13 251 21168 146.47 683 671 139.9
A 15 174 18244 125.58 683 671 139.9
B 4 239 1496532 11250.29 688 672 133.0
B 0 214 54547 405.19 688 672 133.0
B 0 85 31582 232.47 688 672 133.0
C 13 61 5022 27.22 682 687 159.2
C 14 234 1757 6.72 682 687 159.2
C 3 202 1633 5.94 682 687 159.2
D 1 52 150097 892.28 683 665 167.5
D 9 85 116647 692.55 683 665 167.5
D 13 105 47574 280.1 683 665 167.5

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