ASTROSAT CZTI

Data Quality Report

Orbit 27818

Creation date: 2024-06-27T19:44:48.236497
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/AS1A10_048T08_9000004020_27818cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27818cztM0_level2_quad_clean.evt
Size (bytes)441,509,760100,088,640
Size421.1 MB 95.5 MB
Events in quadrant A3,030,919674,944
Events in quadrant B3,185,948682,414
Events in quadrant C2,981,173638,629
Events in quadrant D3,771,215621,981

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128830
B0133280
C0126510
D0151040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5923871.468850%
B5924691.164754%
C5924921.553005%
D59241873.156651%

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 7058 5923 22 22 0.31% 0.37%
B 7059 5924 6 6 0.08% 0.10%
C 7059 5924 0 0 0.00% 0.00%
D 7059 5924 152 152 2.15% 2.57%

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 6 16 46652 295.74 773 759 155.2
A 13 254 9251 54.72 773 759 155.2
A 3 137 7085 40.77 773 759 155.2
B 10 245 144634 994.36 762 745 144.7
B 12 111 17488 115.7 762 745 144.7
B 15 32 15886 104.63 762 745 144.7
C 14 238 118435 694.3 724 730 169.5
C 3 233 30289 174.36 724 730 169.5
C 15 208 13896 77.66 724 730 169.5
D 1 52 892159 5107.0 731 711 174.6
D 2 250 50054 282.68 731 711 174.6
D 2 234 28697 160.33 731 711 174.6

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