ASTROSAT CZTI

Data Quality Report

Orbit 04576

Creation date: 2024-06-27T14:44:00.114660
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/AS1G05_233T10_9000000570_04576cztM0_level2.evt modeM0/AS1G05_233T10_9000000570_04576cztM0_level2_quad_clean.evt
Size (bytes)439,755,84090,276,480
Size419.4 MB 86.1 MB
Events in quadrant A3,466,944578,943
Events in quadrant B3,214,708589,530
Events in quadrant C2,798,012580,598
Events in quadrant D3,418,862554,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146051
B0136170
C0128090
D0146110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61732423.920298%
B61731492.413737%
C6173961.555160%
D61732353.806901%

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 6993 6174 97 97 1.39% 1.57%
B 6993 6174 12 12 0.17% 0.19%
C 6993 6174 5 5 0.07% 0.08%
D 6993 6174 130 130 1.86% 2.11%

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 50 647608 4469.32 710 694 144.7
A 0 13 71361 488.22 710 694 144.7
A 12 194 7321 45.78 710 694 144.7
B 14 167 286584 2065.04 719 699 138.4
B 15 204 47921 341.1 719 699 138.4
B 4 48 35440 250.95 719 699 138.4
C 14 48 60568 370.78 692 693 161.5
C 9 247 12361 72.25 692 693 161.5
C 9 16 12143 70.9 692 693 161.5
D 10 15 384192 2325.45 688 667 164.9
D 13 235 197511 1193.54 688 667 164.9
D 13 53 69217 415.64 688 667 164.9

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