ASTROSAT CZTI

Data Quality Report

Orbit 00925

Creation date: 2024-06-27T14:04:50.239543
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/AS1P01_163T03_9000000186_00925cztM0_level2.evt modeM0/AS1P01_163T03_9000000186_00925cztM0_level2_quad_clean.evt
Size (bytes)993,072,96083,194,560
Size947.1 MB 79.3 MB
Events in quadrant A7,418,500530,630
Events in quadrant B8,040,848531,501
Events in quadrant C7,196,254519,455
Events in quadrant D7,014,867511,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263590
B0281950
C0257090
D0251620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6113520.850646%
B6113871.423196%
C6113440.719778%
D6112410.670812%

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 7358 6115 220 220 2.99% 3.60%
B 7358 6115 340 340 4.62% 5.56%
C 7358 6115 191 191 2.60% 3.12%
D 7357 6114 203 203 2.76% 3.32%

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 12 189 14579 27.54 1927 1944 458.8
A 11 79 8017 13.24 1927 1944 458.8
A 3 111 5986 8.81 1927 1944 458.8
B 7 221 94616 199.74 1988 2001 463.7
B 5 249 84941 178.88 1988 2001 463.7
B 5 191 59190 123.34 1988 2001 463.7
C 15 241 199217 404.35 1770 1828 488.2
C 3 111 26240 50.01 1770 1828 488.2
C 3 79 20448 38.14 1770 1828 488.2
D 12 188 195109 362.99 1742 1804 532.5
D 1 4 167691 311.5 1742 1804 532.5
D 13 171 43097 77.54 1742 1804 532.5

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