ASTROSAT CZTI

Data Quality Report

Orbit 54896

Creation date: 2025-11-20T21:19:55.208691
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/AS1A14_039T06_9000006526_54896cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54896cztM0_level2_quad_clean.evt
Size (bytes)566,400,960100,065,600
Size540.2 MB 95.4 MB
Events in quadrant A8,439,154571,450
Events in quadrant B3,490,730727,631
Events in quadrant C4,126,272631,672
Events in quadrant D4,355,425601,447

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300852
B0155222
C0172832
D0178862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7144148320.758679%
B71441722.407615%
C71442984.171333%
D71442343.275476%

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 8009 7145 1243 1243 15.52% 17.40%
B 8009 7145 29 29 0.36% 0.41%
C 8009 7145 167 167 2.09% 2.34%
D 8009 7145 128 128 1.60% 1.79%

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 3 14 3417664 18498.0 743 725 184.7
A 12 115 2021487 10939.63 743 725 184.7
A 7 14 49633 264.77 743 725 184.7
B 5 185 263533 1565.05 778 749 167.9
B 9 251 58676 344.99 778 749 167.9
B 12 111 20483 117.53 778 749 167.9
C 4 5 578484 2782.04 763 756 207.7
C 3 242 134975 646.33 763 756 207.7
C 15 1 113996 545.31 763 756 207.7
D 15 94 400872 1835.94 770 737 217.9
D 2 249 237468 1086.19 770 737 217.9
D 10 181 92977 423.22 770 737 217.9

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