ASTROSAT CZTI

Data Quality Report

Orbit 14641

Creation date: 2024-06-27T16:57:51.310845
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_043T01_9000002156_14641cztM0_level2.evt modeM0/AS1A04_043T01_9000002156_14641cztM0_level2_quad_clean.evt
Size (bytes)399,352,32065,574,720
Size380.9 MB 62.5 MB
Events in quadrant A2,893,068413,577
Events in quadrant B2,539,384411,972
Events in quadrant C3,795,134402,406
Events in quadrant D2,521,233401,105

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119470
B0108640
C0150840
D0112130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5093180.353426%
B5093190.373061%
C509360.117809%
D5093851.668957%

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 5094 5094 3 3 0.06% 0.06%
B 5094 5094 8 8 0.16% 0.16%
C 5094 5094 1 1 0.02% 0.02%
D 5094 5094 77 77 1.51% 1.51%

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 23 244225 2041.37 581 570 119.4
A 1 162 138728 1157.5 581 570 119.4
A 1 178 62886 522.09 581 570 119.4
B 0 189 109111 978.48 582 567 110.9
B 10 246 46044 409.96 582 567 110.9
B 4 173 31430 278.22 582 567 110.9
C 3 233 1588118 12256.83 561 566 129.5
C 3 234 11900 87.51 561 566 129.5
C 3 232 6168 43.25 561 566 129.5
D 10 70 302210 2102.9 561 546 143.5
D 10 199 25322 172.71 561 546 143.5
D 13 172 22092 150.2 561 546 143.5

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