ASTROSAT CZTI

Data Quality Report

Orbit 30283

Creation date: 2024-06-27T20:13:05.646711
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/AS1A10_007T01_9000004350_30283cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30283cztM0_level2_quad_clean.evt
Size (bytes)510,984,00090,745,920
Size487.3 MB 86.5 MB
Events in quadrant A3,267,940579,527
Events in quadrant B4,892,114592,542
Events in quadrant C3,398,025582,652
Events in quadrant D3,504,966568,602

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133321
B0187771
C0137841
D0144091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60811041.710245%
B60821562.564946%
C6082871.430451%
D6082270.443933%

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 7361 6082 45 45 0.61% 0.74%
B 7362 6083 11 11 0.15% 0.18%
C 7362 6083 1 1 0.01% 0.02%
D 7362 6083 13 13 0.18% 0.21%

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 13 189343 1189.11 795 781 158.6
A 8 192 11226 65.87 795 781 158.6
A 13 254 10481 61.17 795 781 158.6
B 6 159 1641294 10983.15 795 776 149.4
B 0 229 85814 569.32 795 776 149.4
B 6 36 41753 274.34 795 776 149.4
C 3 233 204277 1110.3 782 789 183.3
C 14 238 127637 692.13 782 789 183.3
C 2 114 14437 74.47 782 789 183.3
D 8 195 288539 1520.52 784 769 189.3
D 13 104 69860 365.06 784 769 189.3
D 5 222 61889 322.94 784 769 189.3

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