ASTROSAT CZTI

Data Quality Report

Orbit 26868

Creation date: 2024-06-27T19:33:52.057460
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/AS1T03_224T01_9000003872_26868cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26868cztM0_level2_quad_clean.evt
Size (bytes)602,380,80090,325,440
Size574.5 MB 86.1 MB
Events in quadrant A4,035,424570,359
Events in quadrant B4,361,813586,339
Events in quadrant C3,585,285568,415
Events in quadrant D5,785,345521,231

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161770
B0171680
C0147360
D0216810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70082253.210616%
B70082713.867009%
C70082133.039384%
D700873810.530822%

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 9018 7010 69 69 0.77% 0.98%
B 9018 7009 70 70 0.78% 1.00%
C 9018 7008 0 0 0.00% 0.00%
D 9018 7008 503 503 5.58% 7.18%

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 13 534453 2930.24 907 887 182.1
A 13 254 11024 55.67 907 887 182.1
A 3 137 8571 42.2 907 887 182.1
B 10 246 390194 2284.66 902 879 170.4
B 0 189 317676 1859.1 902 879 170.4
B 0 190 112724 656.35 902 879 170.4
C 14 238 140178 677.68 877 881 205.6
C 3 233 18963 87.97 877 881 205.6
C 2 16 7511 32.25 877 881 205.6
D 7 80 1925835 9612.17 856 836 200.3
D 1 52 332750 1657.36 856 836 200.3
D 2 250 119630 593.18 856 836 200.3

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