ASTROSAT CZTI

Data Quality Report

Orbit 07628

Creation date: 2024-06-27T15:21:59.609242
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/AS1A02_178T01_9000001048_07628cztM0_level2.evt modeM0/AS1A02_178T01_9000001048_07628cztM0_level2_quad_clean.evt
Size (bytes)540,956,16067,423,680
Size515.9 MB 64.3 MB
Events in quadrant A3,704,100401,080
Events in quadrant B3,643,484404,846
Events in quadrant C4,767,891390,756
Events in quadrant D3,814,944379,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151933
B0147332
C0186202
D0155982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66771572.351355%
B66771382.066796%
C66773685.511457%
D66771502.246518%

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 7947 6677 12 12 0.15% 0.18%
B 7947 6677 2 2 0.03% 0.03%
C 7947 6678 159 159 2.00% 2.38%
D 7947 6677 32 32 0.40% 0.48%

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 13 251 303548 1703.21 883 863 177.7
A 0 226 8444 42.66 883 863 177.7
A 12 194 7804 39.06 883 863 177.7
B 0 219 84144 505.6 878 859 164.7
B 4 81 69767 418.32 878 859 164.7
B 0 214 31808 187.88 878 859 164.7
C 9 68 983907 5115.32 841 846 192.2
C 4 254 451202 2343.41 841 846 192.2
C 1 16 39118 199.15 841 846 192.2
D 2 152 168394 801.57 856 830 209.0
D 2 14 154415 734.7 856 830 209.0
D 14 34 92444 438.25 856 830 209.0

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