ASTROSAT CZTI

Data Quality Report

Orbit 35832

Creation date: 2022-05-19T16:44:14.388499
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_071T19_9000005144_35832cztM0_level2.evt modeM0/AS1A10_071T19_9000005144_35832cztM0_level2_quad_clean.evt
Size (bytes)581,849,28072,434,880
Size554.9 MB 69.1 MB
Events in quadrant A6,814,374392,031
Events in quadrant B3,284,183469,258
Events in quadrant C3,201,411464,658
Events in quadrant D3,910,940443,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244843
B0136673
C0132502
D0157073

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6053167927.738312%
B60521141.883675%
C6053971.602511%
D60521983.271646%

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 8769 6055 1433 1433 16.34% 23.67%
B 8769 6055 101 101 1.15% 1.67%
C 8769 6055 83 83 0.95% 1.37%
D 8769 6055 162 162 1.85% 2.68%

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 4318163 35693.93 596 585 121.0
A 10 83 144201 1187.29 596 585 121.0
A 10 248 25471 205.74 596 585 121.0
B 5 172 199348 1489.71 687 668 133.4
B 5 252 122160 910.95 687 668 133.4
B 5 255 92993 692.26 687 668 133.4
C 15 214 252724 1596.74 673 677 157.9
C 0 10 249047 1573.45 673 677 157.9
C 0 207 61106 382.82 673 677 157.9
D 2 250 435057 2633.47 670 651 165.0
D 13 249 369390 2235.38 670 651 165.0
D 7 223 157068 948.24 670 651 165.0

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