ASTROSAT CZTI

Data Quality Report

Orbit 33844

Creation date: 2024-06-27T20:53:17.043375
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/AS1A11_065T07_9000004828_33844cztM0_level2.evt modeM0/AS1A11_065T07_9000004828_33844cztM0_level2_quad_clean.evt
Size (bytes)502,560,00065,056,320
Size479.3 MB 62.0 MB
Events in quadrant A2,605,939417,080
Events in quadrant B3,035,636409,985
Events in quadrant C3,315,580411,297
Events in quadrant D5,929,291385,350

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107333
B0120722
C0131302
D0211322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4928120.243506%
B49281202.435065%
C49281182.394481%
D49284418.948864%

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 7051 4929 0 0 0.00% 0.00%
B 7051 4929 88 88 1.25% 1.79%
C 7051 4929 105 105 1.49% 2.13%
D 7051 4929 415 415 5.89% 8.42%

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 15 169 81978 636.42 646 637 127.8
A 13 6 11412 84.3 646 637 127.8
A 10 83 11359 83.89 646 637 127.8
B 5 172 458482 3838.44 637 623 119.3
B 0 199 17842 144.35 637 623 119.3
B 5 255 16404 132.3 637 623 119.3
C 14 254 287458 2008.5 628 637 142.8
C 15 214 213426 1490.08 628 637 142.8
C 0 10 157614 1099.25 628 637 142.8
D 8 195 1227260 7576.39 615 603 161.9
D 12 235 1203445 7429.3 615 603 161.9
D 12 233 287061 1769.29 615 603 161.9

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