ASTROSAT CZTI

Data Quality Report

Orbit 54463

Creation date: 2025-10-22T18:27:23.114081
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_126T19_9000006518_54463cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54463cztM0_level2_quad_clean.evt
Size (bytes)788,941,44099,360,000
Size752.4 MB 94.8 MB
Events in quadrant A3,626,341701,003
Events in quadrant B4,451,166735,264
Events in quadrant C7,459,524622,312
Events in quadrant D13,075,913418,372

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162770
B0187130
C0274860
D0441406

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7640360.471204%
B76402573.363874%
C76407069.240838%
D7640294938.599476%

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 7640 7640 30 30 0.39% 0.39%
B 7640 7640 144 144 1.88% 1.88%
C 7640 7640 738 738 9.66% 9.66%
D 7640 7640 3042 3042 39.82% 39.82%

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 8 9 337261 1719.25 793 773 195.7
A 8 6 92105 466.65 793 773 195.7
A 5 243 43008 215.79 793 773 195.7
B 0 213 478506 2868.66 774 746 166.5
B 2 249 390099 2337.83 774 746 166.5
B 5 185 317344 1900.98 774 746 166.5
C 7 64 2619698 12926.49 739 733 202.6
C 4 5 1165830 5750.6 739 733 202.6
C 12 2 571501 2817.15 739 733 202.6
D 10 199 3370089 18422.05 642 612 182.9
D 8 176 2433678 13302.38 642 612 182.9
D 2 172 1858774 10159.19 642 612 182.9

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