ASTROSAT CZTI

Data Quality Report

Orbit 35859

Creation date: 2022-06-08T19:09:57.834595
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/AS1A11_080T01_9000005146_35859cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35859cztM0_level2_quad_clean.evt
Size (bytes)452,689,92093,528,000
Size431.7 MB 89.2 MB
Events in quadrant A3,892,162628,503
Events in quadrant B2,994,370626,137
Events in quadrant C2,900,591619,124
Events in quadrant D3,556,028580,587

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149923
B0121262
C0115562
D0140742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54082594.789201%
B5408731.349852%
C5408721.331361%
D54082153.975592%

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 7051 5409 205 205 2.91% 3.79%
B 7051 5409 48 48 0.68% 0.89%
C 7051 5409 53 53 0.75% 0.98%
D 7051 5409 175 175 2.48% 3.24%

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 15 169 1201129 8988.67 647 636 133.6
A 10 83 158798 1184.23 647 636 133.6
A 7 48 10976 77.42 647 636 133.6
B 5 172 331490 2624.96 650 636 126.0
B 0 213 54041 423.71 650 636 126.0
B 5 255 17071 130.39 650 636 126.0
C 15 214 225601 1510.48 637 645 148.9
C 0 10 173758 1162.38 637 645 148.9
C 1 23 9134 57.0 637 645 148.9
D 13 153 265534 1697.81 630 614 156.0
D 2 153 256751 1641.52 630 614 156.0
D 13 249 193936 1238.95 630 614 156.0

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