ASTROSAT CZTI

Data Quality Report

Orbit 23721

Creation date: 2024-06-27T18:57:55.935789
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/AS1A07_027T06_9000003508_23721cztM0_level2.evt modeM0/AS1A07_027T06_9000003508_23721cztM0_level2_quad_clean.evt
Size (bytes)332,936,64051,030,720
Size317.5 MB 48.7 MB
Events in quadrant A2,148,718315,284
Events in quadrant B2,409,669321,243
Events in quadrant C2,197,202309,530
Events in quadrant D3,027,564289,231

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092291
B099891
C092791
D0119371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4409170.385575%
B4408461.043557%
C4408481.088929%
D44081774.015426%

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 5554 4410 1 1 0.02% 0.02%
B 5553 4408 5 5 0.09% 0.11%
C 5553 4409 1 1 0.02% 0.02%
D 5553 4409 162 162 2.92% 3.67%

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 13 254 7560 61.93 556 544 113.3
A 0 226 4850 38.01 556 544 113.3
A 3 137 4808 37.64 556 544 113.3
B 0 229 148708 1377.11 559 547 107.6
B 0 189 44361 407.24 559 547 107.6
B 0 219 20001 180.82 559 547 107.6
C 14 238 85805 676.23 536 540 126.1
C 7 247 17734 136.36 536 540 126.1
C 13 61 3803 25.88 536 540 126.1
D 1 52 782511 5998.57 530 513 130.4
D 13 174 171005 1307.81 530 513 130.4
D 12 233 32674 246.7 530 513 130.4

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