ASTROSAT CZTI

Data Quality Report

Orbit 36766

Creation date: 2024-06-27T21:31:22.341724
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_087T05_9000005240_36766cztM0_level2.evt modeM0/AS1A11_087T05_9000005240_36766cztM0_level2_quad_clean.evt
Size (bytes)659,260,80074,753,280
Size628.7 MB 71.3 MB
Events in quadrant A2,627,884553,715
Events in quadrant B11,418,934256,520
Events in quadrant C2,650,156568,495
Events in quadrant D2,926,460529,365

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110053
B0372992
C0107622
D0119612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5054150.296795%
B5054392877.720617%
C5054190.375940%
D50541372.710724%

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 6997 5055 8 8 0.11% 0.16%
B 6997 5054 3811 3811 54.47% 75.41%
C 6997 5055 9 9 0.13% 0.18%
D 6997 5055 102 102 1.46% 2.02%

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 201509 1649.03 602 592 121.8
A 9 143 88043 717.76 602 592 121.8
A 13 254 7845 59.53 602 592 121.8
B 12 1 10175735 198425.42 269 262 51.3
B 0 213 73733 1432.71 269 262 51.3
B 5 255 54375 1055.22 269 262 51.3
C 15 214 216133 1545.15 601 607 139.5
C 0 10 49959 353.82 601 607 139.5
C 14 254 18921 131.3 601 607 139.5
D 13 249 361092 2511.01 591 577 143.6
D 12 6 119438 827.88 591 577 143.6
D 2 250 50579 348.27 591 577 143.6

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