ASTROSAT CZTI

Data Quality Report

Orbit 27685

Creation date: 2024-06-27T19:43:02.060239
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/AS1A09_038T36_9000003978_27685cztM0_level2.evt modeM0/AS1A09_038T36_9000003978_27685cztM0_level2_quad_clean.evt
Size (bytes)469,296,000116,464,320
Size447.6 MB 111.1 MB
Events in quadrant A3,007,864783,204
Events in quadrant B3,109,066798,792
Events in quadrant C3,239,243757,670
Events in quadrant D4,416,771736,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133220
B0134240
C0137610
D0174770

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64671922.968919%
B64672103.247255%
C64672604.020411%
D64672964.577084%

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 6766 6466 0 0 0.00% 0.00%
B 6766 6466 1 1 0.01% 0.02%
C 6766 6466 11 11 0.16% 0.17%
D 6766 6466 140 140 2.07% 2.17%

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 13 254 10090 59.51 775 756 156.8
A 3 137 7674 44.11 775 756 156.8
A 0 226 6567 37.05 775 756 156.8
B 0 230 30893 203.04 772 750 148.5
B 15 32 23869 155.73 772 750 148.5
B 12 111 18343 118.51 772 750 148.5
C 8 208 154225 875.78 746 748 175.2
C 14 238 118177 670.08 746 748 175.2
C 3 233 36215 202.38 746 748 175.2
D 12 2 795616 4420.37 752 730 179.8
D 1 52 495267 2750.13 752 730 179.8
D 2 250 224281 1243.17 752 730 179.8

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