ASTROSAT CZTI

Data Quality Report

Orbit 39637

Creation date: 2024-06-27T22:07:09.095686
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/AS1A12_018T01_9000005488_39637cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39637cztM0_level2_quad_clean.evt
Size (bytes)337,389,12086,466,240
Size321.8 MB 82.5 MB
Events in quadrant A3,138,231574,658
Events in quadrant B2,384,468597,615
Events in quadrant C4,165,849559,096
Events in quadrant D2,411,928536,855

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124693
B0106292
C0157402
D0108092

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49921162.323718%
B4992460.921474%
C49922505.008013%
D4992170.340545%

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 7055 4993 84 84 1.19% 1.68%
B 7055 4993 19 19 0.27% 0.38%
C 7055 4993 248 248 3.52% 4.97%
D 7055 4993 19 19 0.27% 0.38%

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 15 222 624425 5670.6 537 528 110.0
A 10 83 418681 3800.59 537 528 110.0
A 13 254 7528 63.62 537 528 110.0
B 5 172 157864 1533.23 540 525 102.6
B 5 255 83172 805.37 540 525 102.6
B 12 111 12641 118.07 540 525 102.6
C 9 187 1425089 11572.42 528 531 123.1
C 15 208 427958 3472.21 528 531 123.1
C 15 214 207390 1680.42 528 531 123.1
D 13 249 107815 821.87 534 519 130.6
D 1 52 78784 599.49 534 519 130.6
D 12 0 53240 403.83 534 519 130.6

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