ASTROSAT CZTI

Data Quality Report

Orbit 27530

Creation date: 2024-06-27T19:41:02.143810
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_27530cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27530cztM0_level2_quad_clean.evt
Size (bytes)498,818,880119,787,840
Size475.7 MB 114.2 MB
Events in quadrant A3,430,989815,324
Events in quadrant B3,473,524840,671
Events in quadrant C3,411,465777,549
Events in quadrant D4,347,439738,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142470
B0144280
C0141720
D0172200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6531190.290920%
B6531280.428725%
C6530540.826953%
D65301973.016845%

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 7881 6532 3 3 0.04% 0.05%
B 7881 6532 0 0 0.00% 0.00%
C 7880 6531 0 0 0.00% 0.00%
D 7880 6531 184 184 2.34% 2.82%

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 15 174 77507 444.93 869 855 172.3
A 13 254 10637 56.78 869 855 172.3
A 3 137 7707 39.77 869 855 172.3
B 15 32 26806 158.33 875 855 163.9
B 12 111 19631 114.55 875 855 163.9
B 0 230 17518 101.66 875 855 163.9
C 14 238 135920 695.74 832 839 194.2
C 2 16 31120 155.96 832 839 194.2
C 13 61 5668 24.87 832 839 194.2
D 1 52 567742 2938.83 818 797 192.9
D 7 80 416141 2152.98 818 797 192.9
D 2 250 98768 507.84 818 797 192.9

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