ASTROSAT CZTI

Data Quality Report

Orbit 41709

Creation date: 2024-06-27T22:31:53.622596
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/AS1A12_077T12_9000005692_41709cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41709cztM0_level2_quad_clean.evt
Size (bytes)188,205,12042,341,760
Size179.5 MB 40.4 MB
Events in quadrant A1,617,078277,236
Events in quadrant B1,381,415283,941
Events in quadrant C1,633,092260,078
Events in quadrant D2,096,153244,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0665640
B0625133
C0680735
D0838836

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0642
B0640
C0631
D0642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A304580.262726%
B3045100.328407%
C3044963.153745%
D30451444.729064%

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 4990 3048 2 2 0.04% 0.07%
B 4990 3048 7 7 0.14% 0.23%
C 4994 3049 95 95 1.90% 3.12%
D 4994 3048 151 151 3.02% 4.95%

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 286896 4005.4 339 332 71.5
A 15 223 8997 121.11 339 332 71.5
A 2 79 7338 97.93 339 332 71.5
B 4 141 28114 418.4 337 328 66.4
B 5 255 11527 168.63 337 328 66.4
B 12 111 8513 123.25 337 328 66.4
C 0 10 245081 3158.74 324 325 77.5
C 15 214 122488 1576.6 324 325 77.5
C 13 61 2156 23.63 324 325 77.5
D 2 249 546172 6779.11 324 314 80.5
D 13 249 234295 2905.85 324 314 80.5
D 12 6 47050 580.42 324 314 80.5

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