ASTROSAT CZTI

Data Quality Report

Orbit 00554

Creation date: 2024-06-27T13:59:40.904329
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_015T01_9000000074_00554cztM0_level2.evt modeM0/AS1P01_015T01_9000000074_00554cztM0_level2_quad_clean.evt
Size (bytes)842,636,16041,025,600
Size803.6 MB 39.1 MB
Events in quadrant A6,527,186219,909
Events in quadrant B6,327,662223,290
Events in quadrant C6,122,399219,993
Events in quadrant D6,197,686215,144

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230613
B0224672
C0218752
D0221312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5183230.443758%
B518330.057882%
C5183400.771754%
D5183611.176925%

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 7338 5184 192 192 2.62% 3.70%
B 7338 5184 84 84 1.14% 1.62%
C 7338 5184 137 137 1.87% 2.64%
D 7338 5184 200 200 2.73% 3.86%

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 0 238 77420 207.43 1611 1587 365.6
A 12 133 54131 143.72 1611 1587 365.6
A 13 160 53648 142.4 1611 1587 365.6
B 0 230 45610 115.65 1605 1614 380.4
B 4 235 35135 88.11 1605 1614 380.4
B 0 220 20615 49.95 1605 1614 380.4
C 3 159 280861 676.76 1468 1525 412.8
C 0 207 23191 52.49 1468 1525 412.8
C 1 1 14857 32.3 1468 1525 412.8
D 13 221 212138 474.44 1412 1461 444.1
D 12 237 168893 377.05 1412 1461 444.1
D 1 4 137631 306.65 1412 1461 444.1

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