ASTROSAT CZTI

Data Quality Report

Orbit 35098

Creation date: 2022-03-31T12:44:56.457525
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/AS1T05_015T01_9000005026_35098cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35098cztM0_level2_quad_clean.evt
Size (bytes)554,546,88064,920,960
Size528.9 MB 61.9 MB
Events in quadrant A2,592,937407,719
Events in quadrant B3,191,087415,622
Events in quadrant C3,085,387402,564
Events in quadrant D7,564,724366,471

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109813
B0127482
C0121552
D0262022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533260.112528%
B53321482.775694%
C53321162.175544%
D533275914.234809%

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 7036 5334 0 0 0.00% 0.00%
B 7036 5334 94 94 1.34% 1.76%
C 7036 5334 91 91 1.29% 1.71%
D 7036 5334 682 682 9.69% 12.79%

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 10 83 83155 636.06 644 632 129.7
A 13 254 9183 65.91 644 632 129.7
A 13 6 7150 50.24 644 632 129.7
B 5 172 508545 4165.73 630 612 121.9
B 5 255 135535 1106.55 630 612 121.9
B 15 85 22312 177.97 630 612 121.9
C 0 10 326179 2281.42 614 617 142.7
C 15 214 223915 1564.79 614 617 142.7
C 10 49 51064 353.51 614 617 142.7
D 8 195 3391317 23156.92 597 581 146.4
D 7 80 1266961 8648.7 597 581 146.4
D 2 250 161330 1097.83 597 581 146.4

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