ASTROSAT CZTI

Data Quality Report

Orbit 36705

Creation date: 2024-06-27T21:30:32.904646
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/AS1C07_001T09_9000005236_36705cztM0_level2.evt modeM0/AS1C07_001T09_9000005236_36705cztM0_level2_quad_clean.evt
Size (bytes)438,534,72099,368,640
Size418.2 MB 94.8 MB
Events in quadrant A2,681,491668,271
Events in quadrant B2,747,360673,252
Events in quadrant C4,265,480643,601
Events in quadrant D3,212,080638,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117703
B0120222
C0163262
D0135162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5505250.454133%
B5505200.363306%
C55053987.229791%
D55051572.851953%

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 7178 5506 21 21 0.29% 0.38%
B 7178 5506 13 13 0.18% 0.24%
C 7178 5506 350 350 4.88% 6.36%
D 7178 5506 132 132 1.84% 2.40%

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 219643 1803.17 600 588 121.5
A 9 143 113509 929.52 600 588 121.5
A 13 6 12507 98.11 600 588 121.5
B 0 221 134539 1179.22 601 584 113.6
B 5 255 74039 646.63 601 584 113.6
B 0 229 41167 357.26 601 584 113.6
C 0 10 1385037 10423.08 572 576 132.8
C 14 254 346652 2605.47 572 576 132.8
C 15 214 243706 1830.43 572 576 132.8
D 12 233 225054 1583.72 581 566 141.7
D 13 249 202913 1427.52 581 566 141.7
D 13 171 128386 901.75 581 566 141.7

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