ASTROSAT CZTI

Data Quality Report

Orbit 04948

Creation date: 2024-06-27T14:49:12.388500
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/AS1G05_157T01_9000000626_04948cztM0_level2.evt modeM0/AS1G05_157T01_9000000626_04948cztM0_level2_quad_clean.evt
Size (bytes)472,458,24091,523,520
Size450.6 MB 87.3 MB
Events in quadrant A3,310,923590,161
Events in quadrant B3,300,640592,984
Events in quadrant C3,040,158591,107
Events in quadrant D4,223,467552,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140223
B0139082
C0133292
D0167652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6377891.395641%
B6377671.050651%
C6377470.737024%
D63773044.767132%

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 7597 6377 14 14 0.18% 0.22%
B 7597 6377 4 4 0.05% 0.06%
C 7597 6377 0 0 0.00% 0.00%
D 7597 6377 204 204 2.69% 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 0 31 92009 565.24 803 787 161.4
A 0 50 79962 490.59 803 787 161.4
A 8 15 39393 239.21 803 787 161.4
B 10 16 87287 575.01 804 787 150.4
B 15 204 46082 301.1 804 787 150.4
B 15 54 16289 103.05 804 787 150.4
C 13 61 6361 31.49 776 781 177.2
C 14 67 6207 30.62 776 781 177.2
C 1 16 4003 18.18 776 781 177.2
D 2 33 723350 3886.54 767 745 185.9
D 7 67 184629 989.02 767 745 185.9
D 2 234 86213 459.69 767 745 185.9

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