ASTROSAT CZTI

Data Quality Report

Orbit 54258

Creation date: 2025-10-09T17:58:35.225568
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_004T08_9000006514_54258cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54258cztM0_level2_quad_clean.evt
Size (bytes)585,996,48094,049,280
Size558.8 MB 89.7 MB
Events in quadrant A4,463,563631,303
Events in quadrant B4,095,026701,323
Events in quadrant C4,957,773569,939
Events in quadrant D7,637,177462,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182432
B0171702
C0197452
D0275922

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69324636.679169%
B69322133.072706%
C69326148.857473%
D6932154622.302366%

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 7092 6933 323 323 4.55% 4.66%
B 7092 6934 55 55 0.78% 0.79%
C 7092 6933 414 414 5.84% 5.97%
D 7092 6933 1246 1246 17.57% 17.97%

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 17 592528 3319.58 722 704 178.3
A 7 29 461785 2586.24 722 704 178.3
A 15 174 236513 1322.67 722 704 178.3
B 7 0 474787 3037.21 732 708 156.1
B 5 236 195011 1244.81 732 708 156.1
B 0 213 166155 1059.94 732 708 156.1
C 1 29 1041291 5532.33 690 685 188.1
C 13 3 314662 1669.24 690 685 188.1
C 12 249 309120 1639.78 690 685 188.1
D 8 176 4511011 25322.45 626 598 178.1
D 10 181 166794 933.06 626 598 178.1
D 3 12 91300 509.22 626 598 178.1

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