ASTROSAT CZTI

Data Quality Report

Orbit 35592

Creation date: 2022-04-28T22:48:55.649456
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/AS1A10_065T04_9000005098_35592cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35592cztM0_level2_quad_clean.evt
Size (bytes)476,190,72075,850,560
Size454.1 MB 72.3 MB
Events in quadrant A2,734,044500,749
Events in quadrant B3,397,873492,061
Events in quadrant C3,557,982475,490
Events in quadrant D4,365,422450,476

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116833
B0136602
C0138822
D0165622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5403400.740329%
B54032544.701092%
C54032604.812141%
D54034297.940033%

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 7195 5403 32 32 0.44% 0.59%
B 7196 5404 177 177 2.46% 3.28%
C 7196 5404 207 207 2.88% 3.83%
D 7195 5403 354 354 4.92% 6.55%

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 145281 1135.31 630 616 127.4
A 15 169 132997 1038.9 630 616 127.4
A 13 6 14124 106.01 630 616 127.4
B 5 172 674037 5708.18 613 597 118.0
B 4 81 179227 1514.1 613 597 118.0
B 15 85 77043 647.97 613 597 118.0
C 0 10 659146 4750.43 599 606 138.6
C 1 23 273287 1967.01 599 606 138.6
C 15 214 217413 1563.96 599 606 138.6
D 7 80 1472079 10103.45 598 582 145.6
D 1 52 173991 1190.64 598 582 145.6
D 13 249 90676 618.59 598 582 145.6

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