ASTROSAT CZTI

Data Quality Report

Orbit 53395

Creation date: 2025-08-11T20:01:55.389756
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_011T09_9000006494_53395cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53395cztM0_level2_quad_clean.evt
Size (bytes)946,088,64073,002,240
Size902.3 MB 69.6 MB
Events in quadrant A5,112,761594,441
Events in quadrant B7,805,486534,590
Events in quadrant C15,772,01868,927
Events in quadrant D5,836,096565,353

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195941
B0276111
C0511641
D0218661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64035979.323754%
B6403156324.410433%
C6403575789.910979%
D64031832.858035%

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 7388 6403 411 411 5.56% 6.42%
B 7388 6403 1087 1087 14.71% 16.98%
C 7388 6403 5382 5382 72.85% 84.05%
D 7388 6403 131 131 1.77% 2.05%

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 15 174 893766 5343.25 669 655 167.1
A 7 206 610145 3646.42 669 655 167.1
A 12 115 462033 2760.3 669 655 167.1
B 2 249 2918510 22846.73 600 580 127.7
B 4 206 611850 4786.11 600 580 127.7
B 4 171 586280 4585.9 600 580 127.7
C 1 241 8938045 105695.74 303 300 84.6
C 15 178 3883579 45922.77 303 300 84.6
C 15 224 1005042 11881.85 303 300 84.6
D 0 18 2198047 11519.94 665 635 190.7
D 2 153 222635 1163.84 665 635 190.7
D 3 12 176643 922.72 665 635 190.7

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