ASTROSAT CZTI

Data Quality Report

Orbit 53059

Creation date: 2025-07-20T06:28:12.654921
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_9000006488_53059cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53059cztM0_level2_quad_clean.evt
Size (bytes)809,040,96084,228,480
Size771.6 MB 80.3 MB
Events in quadrant A4,642,539611,880
Events in quadrant B4,781,085639,670
Events in quadrant C10,180,544417,639
Events in quadrant D9,831,650418,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184931
B0188741
C0348354
D0339691

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66264196.323574%
B66274576.896031%
C6626243236.703894%
D6626207431.300936%

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 7581 6627 315 315 4.16% 4.75%
B 7582 6628 347 347 4.58% 5.24%
C 7581 6627 2169 2169 28.61% 32.73%
D 7581 6627 1926 1926 25.41% 29.06%

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 7 206 939793 5617.88 671 656 167.2
A 9 191 233726 1394.22 671 656 167.2
A 0 8 203166 1211.41 671 656 167.2
B 1 255 948227 6757.56 660 637 140.2
B 10 63 358295 2550.57 660 637 140.2
B 5 172 206941 1471.22 660 637 140.2
C 1 241 3283949 21217.83 562 556 154.7
C 15 224 2840145 18349.89 562 556 154.7
C 0 193 492175 3176.92 562 556 154.7
D 8 176 2354113 14719.09 548 523 159.9
D 12 17 1622142 10141.43 548 523 159.9
D 15 78 1553804 9714.05 548 523 159.9

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