ASTROSAT CZTI

Data Quality Report

Orbit 50535

Creation date: 2025-01-31T05:47:46.334251
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/AS1T05_239T01_9000006444_50535cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50535cztM0_level2_quad_clean.evt
Size (bytes)648,149,76092,183,040
Size618.1 MB 87.9 MB
Events in quadrant A4,197,692632,729
Events in quadrant B6,762,672585,712
Events in quadrant C6,524,010575,891
Events in quadrant D6,001,175540,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167262
B0246072
C0239052
D0224377

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65471682.566061%
B6547122618.726134%
C65476249.531083%
D65466169.410327%

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 7717 6548 102 102 1.32% 1.56%
B 7717 6548 846 846 10.96% 12.92%
C 7717 6548 448 448 5.81% 6.84%
D 7716 6547 514 514 6.66% 7.85%

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 4 3 271099 1543.13 709 691 175.2
A 12 250 174576 992.31 709 691 175.2
A 3 130 149658 850.11 709 691 175.2
B 4 170 1911912 13370.57 667 645 142.9
B 7 0 1690556 11822.04 667 645 142.9
B 8 128 137322 956.15 667 645 142.9
C 15 212 985165 5218.99 680 674 188.6
C 3 233 559919 2964.67 680 674 188.6
C 15 234 313551 1658.63 680 674 188.6
D 8 246 1629289 8611.75 670 645 189.1
D 12 128 316604 1670.69 670 645 189.1
D 15 79 296066 1562.09 670 645 189.1

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