ASTROSAT CZTI

Data Quality Report

Orbit 53906

Creation date: 2025-09-15T05:52:10.536756
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_057T04_9000006508_53906cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53906cztM0_level2_quad_clean.evt
Size (bytes)705,326,40082,555,200
Size672.7 MB 78.7 MB
Events in quadrant A3,096,342670,013
Events in quadrant B4,355,923679,529
Events in quadrant C7,948,188483,397
Events in quadrant D10,201,302212,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137601
B0176211
C0280391
D0347771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6517260.398957%
B65174276.552095%
C6517174926.837502%
D6518420964.575023%

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 7732 6518 3 3 0.04% 0.05%
B 7732 6518 342 342 4.42% 5.25%
C 7732 6518 1630 1630 21.08% 25.01%
D 7732 6517 2307 2307 29.84% 35.40%

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 12 115 154380 851.36 724 708 180.5
A 15 174 31261 169.27 724 708 180.5
A 4 249 22605 121.31 724 708 180.5
B 5 172 1188308 7893.65 708 685 150.5
B 7 0 83762 552.18 708 685 150.5
B 5 185 59569 391.38 708 685 150.5
C 1 241 3398064 20049.17 616 609 169.5
C 15 224 1442950 8511.59 616 609 169.5
C 13 3 483800 2851.42 616 609 169.5
D 8 176 8463600 93202.16 311 297 90.8
D 5 113 269004 2959.14 311 297 90.8
D 10 172 42553 465.34 311 297 90.8

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