ASTROSAT CZTI

Data Quality Report

Orbit 12754

Creation date: 2024-06-27T16:31:58.428929
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/AS1A04_044T01_9000001882_12754cztM0_level2.evt modeM0/AS1A04_044T01_9000001882_12754cztM0_level2_quad_clean.evt
Size (bytes)555,865,92093,038,400
Size530.1 MB 88.7 MB
Events in quadrant A3,977,920590,271
Events in quadrant B4,494,493577,379
Events in quadrant C3,282,568603,394
Events in quadrant D4,610,121564,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165573
B0179012
C0145552
D0186572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69221141.646923%
B69224616.659925%
C6922660.953482%
D69223585.171916%

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 6924 0 0 0.00% 0.00%
B 7773 6924 255 255 3.28% 3.68%
C 7773 6924 1 1 0.01% 0.01%
D 7773 6924 318 318 4.09% 4.59%

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 23 550895 3222.16 839 821 170.7
A 15 222 149483 870.81 839 821 170.7
A 0 226 42428 243.72 839 821 170.7
B 4 239 1128366 7162.81 820 800 157.4
B 3 64 41554 258.89 820 800 157.4
B 0 214 23749 145.78 820 800 157.4
C 15 208 108101 563.23 814 820 190.5
C 13 61 5964 27.01 814 820 190.5
C 3 202 1971 6.04 814 820 190.5
D 1 52 1465350 7506.15 803 781 195.1
D 2 136 35907 180.03 803 781 195.1
D 8 195 33177 166.03 803 781 195.1

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