ASTROSAT CZTI

Data Quality Report

Orbit 13659

Creation date: 2024-06-27T16:44:11.983522
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_075T01_9000002024_13659cztM0_level2.evt modeM0/AS1G08_075T01_9000002024_13659cztM0_level2_quad_clean.evt
Size (bytes)268,992,00054,915,840
Size256.5 MB 52.4 MB
Events in quadrant A2,058,586338,658
Events in quadrant B1,953,894352,258
Events in quadrant C1,880,098367,587
Events in quadrant D2,005,847347,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0121

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122963876
B0113913250
C0110383204
D0120133768

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010428
B011038
C011139
D010529

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3596501.390434%
B3640531.456044%
C3638320.879604%
D3642461.263042%

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 4863 3694 18 18 0.37% 0.49%
B 4855 3726 5 5 0.10% 0.13%
C 4909 3713 0 0 0.00% 0.00%
D 4870 3729 14 14 0.29% 0.38%

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 9 143 262594 2772.37 455 445 94.6
A 15 69 31247 325.75 455 445 94.6
A 1 162 6103 59.84 455 445 94.6
B 0 219 69325 778.57 460 449 88.5
B 3 64 33018 368.15 460 449 88.5
B 4 142 22210 245.98 460 449 88.5
C 3 233 112715 1053.01 453 457 106.6
C 13 61 3369 27.32 453 457 106.6
C 3 202 1108 6.11 453 457 106.6
D 5 222 172927 1578.93 449 437 109.2
D 8 195 73935 672.78 449 437 109.2
D 12 110 25204 226.71 449 437 109.2

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