ASTROSAT CZTI

Data Quality Report

Orbit 52254

Creation date: 2025-07-21T16:16:02.022393
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_011T08_9000006472_52254cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52254cztM0_level2_quad_clean.evt
Size (bytes)837,933,12092,502,720
Size799.1 MB 88.2 MB
Events in quadrant A4,077,845684,164
Events in quadrant B10,593,184507,984
Events in quadrant C7,872,640581,096
Events in quadrant D7,903,706514,318

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173942
B0366472
C0285372
D0285892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73671251.696756%
B7367273437.111443%
C7368114915.594463%
D7368140719.096091%

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 7467 7370 61 61 0.82% 0.83%
B 7467 7370 1677 1677 22.46% 22.75%
C 7468 7371 873 873 11.69% 11.84%
D 7468 7371 1107 1107 14.82% 15.02%

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 3 333646 1752.75 769 748 189.9
A 5 240 171404 898.52 769 748 189.9
A 4 3 106494 556.77 769 748 189.9
B 12 32 3445448 24567.54 662 638 140.2
B 10 254 2412708 17202.29 662 638 140.2
B 5 32 500225 3562.93 662 638 140.2
C 15 224 3337000 17136.6 710 702 194.7
C 15 189 372125 1907.78 710 702 194.7
C 4 5 293161 1502.19 710 702 194.7
D 11 176 2021379 10390.75 688 660 194.5
D 8 176 1465674 7533.26 688 660 194.5
D 15 94 592825 3044.97 688 660 194.5

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