ASTROSAT CZTI

Data Quality Report

Orbit 50233

Creation date: 2025-01-10T22:02:56.041986
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/AS1C09_003T01_9000006442_50233cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50233cztM0_level2_quad_clean.evt
Size (bytes)992,819,52066,211,200
Size946.8 MB 63.1 MB
Events in quadrant A5,906,972550,117
Events in quadrant B3,352,435683,996
Events in quadrant C14,013,16796,630
Events in quadrant D12,977,391222,555

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219651
B0144831
C0460123
D0429531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A647399715.402441%
B64731081.668469%
C6472554485.661310%
D6472411763.612485%

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 7523 6474 836 836 11.11% 12.91%
B 7523 6474 38 38 0.51% 0.59%
C 7522 6473 4334 4334 57.62% 66.96%
D 7522 6473 4147 4147 55.13% 64.07%

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 0 98 1848696 11364.07 656 639 162.6
A 10 253 323549 1985.64 656 639 162.6
A 11 7 193820 1187.91 656 639 162.6
B 5 32 118688 813.56 693 670 145.1
B 10 247 85058 581.73 693 670 145.1
B 0 213 57299 390.37 693 670 145.1
C 4 111 7808512 102854.96 259 257 75.9
C 15 213 1517523 19986.33 259 257 75.9
C 15 127 1019462 13425.57 259 257 75.9
D 7 61 6284963 47793.46 470 455 131.5
D 2 165 1401959 10658.39 470 455 131.5
D 15 108 1282639 9750.96 470 455 131.5

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