ASTROSAT CZTI

Data Quality Report

Orbit 37261

Creation date: 2024-06-27T21:37:33.481692
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/AS1T04_087T01_9000005292_37261cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37261cztM0_level2_quad_clean.evt
Size (bytes)406,031,04046,157,760
Size387.2 MB 44.0 MB
Events in quadrant A3,143,681266,216
Events in quadrant B2,873,802266,005
Events in quadrant C3,137,862255,529
Events in quadrant D2,793,907250,938

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123183
B0114922
C0123732
D0114562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51161112.169664%
B5116290.566849%
C5116551.075059%
D5116430.840500%

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 7269 5142 70 70 0.96% 1.36%
B 7269 5142 18 18 0.25% 0.35%
C 7269 5142 56 56 0.77% 1.09%
D 7269 5142 30 30 0.41% 0.58%

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 15 237 341357 2667.41 636 625 127.7
A 10 83 258230 2016.65 636 625 127.7
A 13 248 39483 304.2 636 625 127.7
B 0 213 155475 1285.74 628 613 120.4
B 0 190 89270 736.07 628 613 120.4
B 0 230 66830 549.76 628 613 120.4
C 14 254 386538 2734.34 605 610 141.1
C 15 214 219667 1552.04 605 610 141.1
C 0 10 163442 1153.68 605 610 141.1
D 2 153 183246 1218.55 617 601 149.9
D 13 249 52516 346.36 617 601 149.9
D 2 249 45834 301.78 617 601 149.9

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