ASTROSAT CZTI

Data Quality Report

Orbit 39372

Creation date: 2024-06-27T22:03:46.741347
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_9000005470_39372cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39372cztM0_level2_quad_clean.evt
Size (bytes)369,460,80094,821,120
Size352.3 MB 90.4 MB
Events in quadrant A2,804,309640,484
Events in quadrant B3,320,535651,401
Events in quadrant C2,807,564632,572
Events in quadrant D4,319,389564,848

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118003
B0136542
C0117932
D0166312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5455100.183318%
B54551382.529789%
C5455250.458295%
D54552023.703025%

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 7339 5456 4 4 0.05% 0.07%
B 7339 5456 61 61 0.83% 1.12%
C 7339 5456 16 16 0.22% 0.29%
D 7339 5456 174 174 2.37% 3.19%

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 420377 3412.07 607 596 123.0
A 13 248 18697 147.13 607 596 123.0
A 13 254 8544 64.6 607 596 123.0
B 5 172 875831 7544.55 604 588 116.0
B 5 255 43716 371.76 604 588 116.0
B 12 111 14691 121.57 604 588 116.0
C 15 214 230726 1656.03 596 600 139.0
C 14 254 152387 1092.29 596 600 139.0
C 3 110 39846 282.42 596 600 139.0
D 12 235 1552555 11020.95 582 564 140.8
D 13 249 368986 2616.23 582 564 140.8
D 2 249 141351 999.75 582 564 140.8

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