ASTROSAT CZTI

Data Quality Report

Orbit 41948

Creation date: 2024-06-27T22:34:52.755533
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_101T01_9000005722_41948cztM0_level2.fits modeM0/AS1A12_101T01_9000005722_41948cztM0_level2_quad_clean.evt
Size (bytes)54,357,12012,723,840
Size51.8 MB 12.1 MB
Events in quadrant A454,58786,550
Events in quadrant B368,38088,505
Events in quadrant C356,57484,354
Events in quadrant D771,46267,004

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018191
B015711
C014961
D027871

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74430.403226%
B74430.403226%
C74410.134409%
D74412616.935484%

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 744 744 2 2 0.27% 0.27%
B 744 744 2 2 0.27% 0.27%
C 744 744 0 0 0.00% 0.00%
D 744 744 127 127 17.07% 17.07%

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 141594 7522.92 80 78 18.8
A 10 67 1761 89.47 80 78 18.8
A 13 254 1059 52.15 80 78 18.8
B 0 156 23834 1356.52 81 79 17.5
B 5 255 13006 738.19 81 79 17.5
B 0 190 7631 431.25 81 79 17.5
C 15 214 38056 1828.5 81 81 20.8
C 15 111 918 40.3 81 81 20.8
C 9 54 730 31.25 81 81 20.8
D 2 249 373965 18809.31 73 71 19.9
D 5 222 46989 2360.28 73 71 19.9
D 12 250 35980 1806.46 73 71 19.9

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