ASTROSAT CZTI

Data Quality Report

Orbit 33809

Creation date: 2024-06-27T20:52:48.674012
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/AS1T04_077T01_9000004824_33809cztM0_level2.evt modeM0/AS1T04_077T01_9000004824_33809cztM0_level2_quad_clean.evt
Size (bytes)698,973,12061,848,000
Size666.6 MB 59.0 MB
Events in quadrant A2,750,888400,886
Events in quadrant B3,172,015400,352
Events in quadrant C3,183,606398,903
Events in quadrant D11,687,270284,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115333
B0127672
C0126222
D0385682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5532741.337672%
B55321262.277657%
C5532400.723066%
D5532365666.088214%

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 7175 5533 48 48 0.67% 0.87%
B 7175 5533 99 99 1.38% 1.79%
C 7175 5533 37 37 0.52% 0.67%
D 7175 5533 3600 3600 50.17% 65.06%

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 159701 1187.49 661 648 133.9
A 13 6 27924 203.64 661 648 133.9
A 10 83 10335 72.32 661 648 133.9
B 5 172 248949 1957.08 652 635 126.9
B 5 200 162963 1279.38 652 635 126.9
B 0 213 41551 322.48 652 635 126.9
C 10 49 217001 1455.19 641 646 148.7
C 15 214 179358 1202.01 641 646 148.7
C 14 254 97720 652.91 641 646 148.7
D 12 235 8097161 72612.64 449 435 111.5
D 8 195 979004 8775.95 449 435 111.5
D 2 250 430544 3857.28 449 435 111.5

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