ASTROSAT CZTI

Data Quality Report

Orbit 52108

Creation date: 2025-05-17T10:47:38.129739
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_011T07_9000006470_52108cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52108cztM0_level2_quad_clean.evt
Size (bytes)1,147,547,52068,506,560
Size1.1 GB 65.3 MB
Events in quadrant A3,735,168668,064
Events in quadrant B10,932,615457,402
Events in quadrant C9,640,016448,584
Events in quadrant D17,623,2836,368

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162852
B0373662
C0336582
D0571552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70831151.623606%
B7083293341.409007%
C7083245234.618100%
D7082703199.279864%

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 7683 7084 84 84 1.09% 1.19%
B 7683 7084 2204 2204 28.69% 31.11%
C 7683 7084 1798 1798 23.40% 25.38%
D 7682 7083 6444 6444 83.88% 90.98%

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 8 43 340179 1814.11 742 723 187.1
A 4 3 149015 792.5 742 723 187.1
A 5 240 96227 510.39 742 723 187.1
B 8 3 6724680 51096.5 612 591 131.6
B 12 32 565182 4290.34 612 591 131.6
B 10 44 197692 1497.77 612 591 131.6
C 15 224 5834809 35338.22 592 585 165.1
C 5 80 298015 1801.55 592 585 165.1
C 15 192 232306 1403.54 592 585 165.1
D 6 42 13860366 217430.34 216 205 63.7
D 15 94 2185910 34288.1 216 205 63.7
D 8 176 287701 4510.07 216 205 63.7

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