ASTROSAT CZTI

Data Quality Report

Orbit 54211

Creation date: 2025-10-05T18:24:12.131063
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_54211cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54211cztM0_level2_quad_clean.evt
Size (bytes)453,571,20090,273,600
Size432.6 MB 86.1 MB
Events in quadrant A2,770,917621,586
Events in quadrant B3,389,154654,466
Events in quadrant C2,726,444576,051
Events in quadrant D7,425,801452,658

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126051
B0142611
C0128361
D0262721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137610.993971%
B61382163.519062%
C6138530.863473%
D6138125520.446399%

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 7247 6137 2 2 0.03% 0.03%
B 7248 6138 123 123 1.70% 2.00%
C 7248 6138 9 9 0.12% 0.15%
D 7248 6138 1361 1361 18.78% 22.17%

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 4 3 62041 371.61 667 648 165.2
A 10 253 27344 161.59 667 648 165.2
A 3 110 16815 97.86 667 648 165.2
B 5 236 366673 2666.32 648 625 137.3
B 4 81 97434 705.16 648 625 137.3
B 10 245 92867 671.9 648 625 137.3
C 12 252 53028 296.54 638 631 176.7
C 14 254 46300 258.46 638 631 176.7
C 15 233 24556 135.4 638 631 176.7
D 8 176 2792668 16414.5 599 573 170.1
D 11 247 1838621 10805.73 599 573 170.1
D 2 172 93204 544.57 599 573 170.1

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