ASTROSAT CZTI

Data Quality Report

Orbit 35679

Creation date: 2022-09-12T16:50:32.770050
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/AS1A09_029T03_9000005108_35679cztM0_level2.evt modeM0/AS1A09_029T03_9000005108_35679cztM0_level2_quad_clean.evt
Size (bytes)439,390,08084,404,160
Size419.0 MB 80.5 MB
Events in quadrant A2,790,387560,041
Events in quadrant B4,038,831550,628
Events in quadrant C3,159,345536,726
Events in quadrant D2,947,517526,387

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116393
B0155832
C0128152
D0123492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A545760.109951%
B54572354.306395%
C54571282.345611%
D5457721.319406%

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 7281 5458 0 0 0.00% 0.00%
B 7281 5458 167 167 2.29% 3.06%
C 7281 5458 93 93 1.28% 1.70%
D 7281 5458 68 68 0.93% 1.25%

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 149025 1130.48 650 637 131.3
A 15 169 105815 801.29 650 637 131.3
A 13 6 11343 81.56 650 637 131.3
B 5 31 591953 4863.45 632 615 121.6
B 5 172 542859 4459.68 632 615 121.6
B 5 255 273051 2240.65 632 615 121.6
C 0 10 435142 3068.75 610 615 141.6
C 15 214 227792 1604.39 610 615 141.6
C 4 254 76118 533.22 610 615 141.6
D 13 249 126410 818.44 624 607 153.7
D 10 118 107121 692.95 624 607 153.7
D 2 153 97606 631.05 624 607 153.7

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