ASTROSAT CZTI

Data Quality Report

Orbit 40050

Creation date: 2024-06-27T22:11:42.832436
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_054T03_9000005516_40050cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40050cztM0_level2_quad_clean.evt
Size (bytes)380,609,28092,753,280
Size363.0 MB 88.5 MB
Events in quadrant A2,970,226628,624
Events in quadrant B2,540,837647,096
Events in quadrant C3,401,338616,357
Events in quadrant D4,734,337519,593

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124563
B0114832
C0138222
D0183042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5681160.281641%
B568180.140820%
C5681801.408203%
D568165711.564865%

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 8847 5683 7 7 0.08% 0.12%
B 8847 5683 0 0 0.00% 0.00%
C 8847 5683 65 65 0.73% 1.14%
D 8847 5683 541 541 6.12% 9.52%

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 483668 3739.24 627 614 129.2
A 6 10 31428 238.53 627 614 129.2
A 9 143 23123 174.24 627 614 129.2
B 4 171 26036 208.76 626 606 121.8
B 0 230 22063 176.15 626 606 121.8
B 0 221 17753 140.76 626 606 121.8
C 9 187 659095 4523.34 616 620 145.6
C 15 214 233263 1598.12 616 620 145.6
C 14 254 77027 524.87 616 620 145.6
D 12 227 845544 5978.88 578 560 141.3
D 13 249 707213 5000.08 578 560 141.3
D 2 250 401194 2834.78 578 560 141.3

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