ASTROSAT CZTI

Data Quality Report

Orbit 26631

Creation date: 2024-06-27T19:31:10.690779
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/AS1A09_145T01_9000003848_26631cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26631cztM0_level2_quad_clean.evt
Size (bytes)494,481,60090,184,320
Size471.6 MB 86.0 MB
Events in quadrant A3,076,302602,000
Events in quadrant B3,809,349594,399
Events in quadrant C3,103,654572,406
Events in quadrant D4,590,915555,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125390
B0157030
C0126980
D0174740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5822510.875988%
B5823931.597115%
C5823871.494075%
D58225178.880110%

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 6942 5823 6 6 0.09% 0.10%
B 6943 5824 16 16 0.23% 0.27%
C 6943 5824 0 0 0.00% 0.00%
D 6942 5823 465 465 6.70% 7.99%

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 13 112302 726.59 765 754 153.5
A 5 168 12242 74.83 765 754 153.5
A 13 254 9641 57.89 765 754 153.5
B 0 189 712322 4983.28 748 733 142.8
B 10 245 110602 769.42 748 733 142.8
B 15 33 20754 140.21 748 733 142.8
C 3 233 156341 920.76 720 727 169.0
C 14 238 117285 689.67 720 727 169.0
C 15 208 19074 108.56 720 727 169.0
D 1 52 1500291 8549.16 710 690 175.4
D 2 250 239027 1358.75 710 690 175.4
D 7 80 78403 443.04 710 690 175.4

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