ASTROSAT CZTI

Data Quality Report

Orbit 27503

Creation date: 2024-06-27T19:40:43.526753
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_249T01_9000003934_27503cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27503cztM0_level2_quad_clean.evt
Size (bytes)479,367,36099,561,600
Size457.2 MB 94.9 MB
Events in quadrant A3,335,826655,812
Events in quadrant B3,362,219668,467
Events in quadrant C3,335,887626,739
Events in quadrant D4,043,401611,701

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137070
B0137840
C0137260
D0162270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6493300.462036%
B6493570.877868%
C6493921.416911%
D64931061.632527%

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 7773 6494 0 0 0.00% 0.00%
B 7773 6493 0 0 0.00% 0.00%
C 7773 6493 0 0 0.00% 0.00%
D 7773 6494 82 82 1.05% 1.26%

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 4 2 10647 57.48 861 844 170.6
A 13 254 10040 53.92 861 844 170.6
A 3 137 7769 40.6 861 844 170.6
B 12 111 19174 114.13 856 836 160.7
B 11 111 17226 102.01 856 836 160.7
B 14 111 16166 95.41 856 836 160.7
C 14 238 135265 701.58 822 829 191.6
C 13 61 5732 25.59 822 829 191.6
C 15 78 1992 6.07 822 829 191.6
D 1 52 773712 3946.87 822 801 195.8
D 12 233 104500 529.54 822 801 195.8
D 2 250 29340 145.73 822 801 195.8

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