ASTROSAT CZTI

Data Quality Report

Orbit 15790

Creation date: 2024-06-27T17:13:26.308358
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_100T01_9000002336_15790cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15790cztM0_level2_quad_clean.evt
Size (bytes)475,320,96096,768,000
Size453.3 MB 92.3 MB
Events in quadrant A3,184,846616,391
Events in quadrant B4,020,486633,019
Events in quadrant C3,438,345629,840
Events in quadrant D3,326,635614,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136113
B0160452
C0144332
D0141382

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6253530.847593%
B62532073.310411%
C62531131.807133%
D6253981.567248%

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 7549 6255 2 2 0.03% 0.03%
B 7549 6255 67 67 0.89% 1.07%
C 7549 6255 0 0 0.00% 0.00%
D 7549 6255 24 24 0.32% 0.38%

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 15 239 48940 298.57 804 789 161.3
A 14 254 32983 199.63 804 789 161.3
A 0 226 7309 40.43 804 789 161.3
B 10 245 392518 2626.73 809 791 149.1
B 4 251 190786 1274.02 809 791 149.1
B 7 220 113292 754.38 809 791 149.1
C 7 247 205978 1121.45 793 800 183.0
C 14 238 123599 671.19 793 800 183.0
C 10 22 12781 65.49 793 800 183.0
D 1 52 155771 783.81 791 774 197.7
D 2 152 57232 285.5 791 774 197.7
D 10 40 51814 258.11 791 774 197.7

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