ASTROSAT CZTI

Data Quality Report

Orbit 17544

Creation date: 2024-06-27T17:37:48.852808
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/AS1T03_066T01_9000002600_17544cztM0_level2.evt modeM0/AS1T03_066T01_9000002600_17544cztM0_level2_quad_clean.evt
Size (bytes)580,815,36076,798,080
Size553.9 MB 73.2 MB
Events in quadrant A7,446,517467,181
Events in quadrant B3,605,112501,317
Events in quadrant C3,033,791483,791
Events in quadrant D3,117,285473,318

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259821
B0141121
C0121861
D0128221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5716161828.306508%
B57173305.772258%
C57171091.906594%
D5717821.434319%

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 6951 5716 1281 1281 18.43% 22.41%
B 6952 5718 191 191 2.75% 3.34%
C 6952 5718 4 4 0.06% 0.07%
D 6952 5718 1 1 0.01% 0.02%

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 14 237 4863681 36452.14 666 653 133.4
A 15 174 17991 129.96 666 653 133.4
A 0 226 5797 38.55 666 653 133.4
B 10 245 636538 4676.95 715 698 136.0
B 6 36 149883 1097.34 715 698 136.0
B 12 111 15417 108.27 715 698 136.0
C 3 233 148697 906.93 704 709 163.2
C 14 238 110488 672.77 704 709 163.2
C 5 218 16597 97.37 704 709 163.2
D 13 168 238125 1360.55 721 700 174.5
D 13 189 64773 367.17 721 700 174.5
D 1 52 39615 223.0 721 700 174.5

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