ASTROSAT CZTI

Data Quality Report

Orbit 30124

Creation date: 2024-06-27T20:11:12.747584
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/AS1A10_097T01_9000004334_30124cztM0_level2.evt modeM0/AS1A10_097T01_9000004334_30124cztM0_level2_quad_clean.evt
Size (bytes)656,982,720101,871,360
Size626.5 MB 97.2 MB
Events in quadrant A3,099,689682,371
Events in quadrant B4,886,732681,332
Events in quadrant C7,966,561621,454
Events in quadrant D3,520,431662,162

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129531
B0189661
C0281691
D0140901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6266791.260772%
B62661412.250239%
C6266130920.890520%
D6266781.244813%

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 7371 6268 0 0 0.00% 0.00%
B 7371 6268 0 0 0.00% 0.00%
C 7371 6267 593 593 8.05% 9.46%
D 7371 6268 10 10 0.14% 0.16%

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 8 192 11544 67.88 800 784 158.5
A 13 254 11019 64.57 800 784 158.5
A 3 137 7445 42.02 800 784 158.5
B 6 159 1780123 11984.21 783 760 148.5
B 0 190 39512 261.0 783 760 148.5
B 12 111 17805 114.8 783 760 148.5
C 3 233 4886106 28374.79 741 746 172.2
C 14 238 142022 820.55 741 746 172.2
C 14 254 36102 205.35 741 746 172.2
D 8 195 221639 1116.72 790 773 197.8
D 1 52 129957 653.17 790 773 197.8
D 12 227 60919 304.1 790 773 197.8

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