ASTROSAT CZTI

Data Quality Report

Orbit 11620

Creation date: 2024-06-27T16:16:00.164959
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/AS1A04_198T01_9000001708_11620cztM0_level2.evt modeM0/AS1A04_198T01_9000001708_11620cztM0_level2_quad_clean.evt
Size (bytes)643,219,20092,185,920
Size613.4 MB 87.9 MB
Events in quadrant A4,144,750600,900
Events in quadrant B3,619,812617,594
Events in quadrant C3,144,430613,651
Events in quadrant D8,136,351510,907

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165233
B0147432
C0134702
D0286212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64162023.148379%
B64162033.163965%
C6416851.324813%
D6416165025.716958%

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 7537 6418 45 45 0.60% 0.70%
B 7537 6418 66 66 0.88% 1.03%
C 7537 6418 0 0 0.00% 0.00%
D 7537 6417 1401 1401 18.59% 21.83%

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 5 630138 3802.03 813 799 165.5
A 1 162 133892 804.06 813 799 165.5
A 1 178 78468 469.22 813 799 165.5
B 4 239 357002 2328.98 809 793 152.9
B 11 51 53847 346.88 809 793 152.9
B 0 187 24581 155.53 809 793 152.9
C 13 61 6011 28.09 805 812 185.1
C 14 234 2963 11.62 805 812 185.1
C 9 54 2294 8.01 805 812 185.1
D 13 122 5078491 29919.69 718 701 169.7
D 1 52 74928 437.37 718 701 169.7
D 2 152 69717 406.66 718 701 169.7

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