ASTROSAT CZTI

Data Quality Report

Orbit 46948

Creation date: 2024-06-27T23:29:47.243813
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/AS1A13_077T01_9000006286_46948cztM0_level2.fits modeM0/AS1A13_077T01_9000006286_46948cztM0_level2_quad_clean.evt
Size (bytes)585,506,880104,823,360
Size558.4 MB 100.0 MB
Events in quadrant A6,531,952702,591
Events in quadrant B7,206,778675,158
Events in quadrant C3,647,342686,550
Events in quadrant D3,764,934638,686

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240221
B0261511
C0155981
D0157191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67502153.185185%
B675079311.748148%
C67502333.451852%
D67511261.866390%

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 7580 6750 5 5 0.07% 0.07%
B 7580 6750 584 584 7.70% 8.65%
C 7580 6750 150 150 1.98% 2.22%
D 7580 6750 73 73 0.96% 1.08%

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 10 83 3543391 22292.21 761 747 158.9
A 7 3 20988 127.37 761 747 158.9
A 13 6 10697 62.61 761 747 158.9
B 3 112 4083233 27914.46 736 712 146.3
B 5 32 58090 392.33 736 712 146.3
B 5 172 45928 309.17 736 712 146.3
C 14 254 632151 3580.92 741 744 176.3
C 12 2 97629 549.47 741 744 176.3
C 11 16 15315 82.64 741 744 176.3
D 1 52 407673 2139.71 749 725 190.2
D 13 249 213375 1118.1 749 725 190.2
D 14 49 86068 448.73 749 725 190.2

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