ASTROSAT CZTI

Data Quality Report

Orbit 29309

Creation date: 2024-06-27T20:02:37.643941
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_050T01_9000004212_29309cztM0_level2.evt modeM0/AS1A10_050T01_9000004212_29309cztM0_level2_quad_clean.evt
Size (bytes)832,970,880101,718,720
Size794.4 MB 97.0 MB
Events in quadrant A4,047,403672,927
Events in quadrant B6,264,030651,404
Events in quadrant C7,397,869662,328
Events in quadrant D7,056,123616,297

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163962
B0232162
C0269342
D0257582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68491402.044094%
B684989413.053000%
C684994013.724631%
D6849108315.812527%

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 7989 6850 98 98 1.23% 1.43%
B 7989 6850 516 516 6.46% 7.53%
C 7989 6850 369 369 4.62% 5.39%
D 7989 6850 697 697 8.72% 10.18%

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 518024 2966.75 873 859 174.3
A 15 174 135773 773.94 873 859 174.3
A 1 113 15564 84.36 873 859 174.3
B 5 255 2910624 18790.48 823 803 154.9
B 10 245 74126 473.49 823 803 154.9
B 5 172 35934 226.86 823 803 154.9
C 3 233 3990381 20458.38 835 843 195.0
C 14 238 132066 672.91 835 843 195.0
C 2 114 15941 77.42 835 843 195.0
D 1 52 2834664 14801.93 798 777 191.5
D 12 233 350504 1826.69 798 777 191.5
D 7 80 308711 1608.4 798 777 191.5

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