ASTROSAT CZTI

Data Quality Report

Orbit 08762

Creation date: 2024-06-27T15:36:52.380369
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/AS1A03_038T01_9000001218_08762cztM0_level2.evt modeM0/AS1A03_038T01_9000001218_08762cztM0_level2_quad_clean.evt
Size (bytes)657,017,280117,498,240
Size626.6 MB 112.1 MB
Events in quadrant A4,168,674739,271
Events in quadrant B4,172,444749,634
Events in quadrant C4,243,003742,595
Events in quadrant D6,712,440711,647

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01852923
B01849726
C01875821
D02610844

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88691822.052092%
B88672152.424721%
C88691121.262826%
D88698359.414816%

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 9179 8880 11 11 0.12% 0.12%
B 9179 8879 1 1 0.01% 0.01%
C 9179 8881 24 24 0.26% 0.27%
D 9179 8880 779 779 8.49% 8.77%

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 28298 125.96 1059 1033 216.5
A 5 16 27353 121.6 1059 1033 216.5
A 13 248 25150 111.42 1059 1033 216.5
B 12 111 23675 108.92 1064 1037 207.8
B 4 80 23513 108.14 1064 1037 207.8
B 11 111 19288 87.81 1064 1037 207.8
C 9 54 110753 449.84 1040 1044 243.9
C 14 234 23095 90.42 1040 1044 243.9
C 8 128 16638 63.94 1040 1044 243.9
D 2 152 2434531 9585.74 1000 974 253.9
D 1 52 374109 1469.77 1000 974 253.9
D 2 14 37312 143.13 1000 974 253.9

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