ASTROSAT CZTI

Data Quality Report

Orbit 31628

Creation date: 2024-06-27T20:30:51.502052
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_123T01_9000004620_31628cztM0_level2.evt modeM0/AS1A10_123T01_9000004620_31628cztM0_level2_quad_clean.evt
Size (bytes)638,668,80083,473,920
Size609.1 MB 79.6 MB
Events in quadrant A3,124,260556,745
Events in quadrant B5,810,382543,392
Events in quadrant C4,715,508508,758
Events in quadrant D5,280,802493,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128351
B0214241
C0179851
D0198911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6092310.508864%
B60923545.810900%
C60923856.319764%
D60932574.217955%

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 7412 6093 0 0 0.00% 0.00%
B 7412 6093 194 194 2.62% 3.18%
C 7412 6093 129 129 1.74% 2.12%
D 7413 6094 246 246 3.32% 4.04%

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 13 254 13378 78.13 808 794 161.1
A 3 137 7380 40.89 808 794 161.1
A 0 226 6829 37.47 808 794 161.1
B 6 159 1769594 11842.02 795 778 149.4
B 10 245 545303 3645.53 795 778 149.4
B 5 172 129613 862.54 795 778 149.4
C 3 233 1437066 8116.11 760 766 177.0
C 14 238 142934 803.35 760 766 177.0
C 0 10 90542 507.3 760 766 177.0
D 8 195 1352478 7429.48 756 734 181.9
D 12 218 426309 2339.05 756 734 181.9
D 2 250 208467 1141.75 756 734 181.9

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