ASTROSAT CZTI

Data Quality Report

Orbit 21359

Creation date: 2024-06-27T18:26:45.274557
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/AS1A05_041T01_9000003150_21359cztM0_level2.evt modeM0/AS1A05_041T01_9000003150_21359cztM0_level2_quad_clean.evt
Size (bytes)476,640,00078,338,880
Size454.6 MB 74.7 MB
Events in quadrant A3,071,840491,557
Events in quadrant B3,028,833501,817
Events in quadrant C4,412,370468,073
Events in quadrant D3,493,658470,470

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128471
B0128981
C0172971
D0145641

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301460.730043%
B6301520.825266%
C63012944.665926%
D63011592.523409%

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 7211 6301 0 0 0.00% 0.00%
B 7211 6301 1 1 0.01% 0.02%
C 7211 6301 130 130 1.80% 2.06%
D 7211 6301 104 104 1.44% 1.65%

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 5 168 131572 845.3 763 746 154.8
A 13 254 7684 44.83 763 746 154.8
A 3 137 6605 37.86 763 746 154.8
B 0 230 30151 200.66 759 741 146.6
B 12 111 18346 120.11 759 741 146.6
B 11 111 16082 104.67 759 741 146.6
C 3 233 1456332 8595.28 719 722 169.3
C 14 238 111859 656.26 719 722 169.3
C 10 91 41875 243.01 719 722 169.3
D 12 235 472834 2647.46 736 714 178.3
D 13 174 168150 938.91 736 714 178.3
D 1 52 38631 212.62 736 714 178.3

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