ASTROSAT CZTI

Data Quality Report

Orbit 22478

Creation date: 2024-06-27T18:41:44.274154
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/AS1A07_144T02_9000003340_22478cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22478cztM0_level2_quad_clean.evt
Size (bytes)467,421,12068,575,680
Size445.8 MB 65.4 MB
Events in quadrant A3,391,433411,863
Events in quadrant B3,566,745419,640
Events in quadrant C2,893,431408,138
Events in quadrant D3,878,903400,560

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141612
B0147652
C0124782
D0159082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6244791.265215%
B6244941.505445%
C6244137722.053171%
D62441432.290199%

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 7534 6244 0 0 0.00% 0.00%
B 7534 6244 2 2 0.03% 0.03%
C 7533 6243 0 0 0.00% 0.00%
D 7534 6244 63 63 0.84% 1.01%

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 13 254 9902 51.92 877 861 174.1
A 3 1 7800 39.85 877 861 174.1
A 0 226 7516 38.22 877 861 174.1
B 15 33 97968 595.83 877 858 163.0
B 0 228 21785 128.4 877 858 163.0
B 12 111 18769 109.89 877 858 163.0
C 7 119 179802 1156.87 663 671 154.8
C 14 238 105467 676.8 663 671 154.8
C 10 22 18526 115.31 663 671 154.8
D 1 52 456361 2186.82 866 844 208.3
D 12 235 78455 372.59 866 844 208.3
D 2 120 35355 165.68 866 844 208.3

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