ASTROSAT CZTI

Data Quality Report

Orbit 51280

Creation date: 2025-03-22T16:56:48.630662
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/AS1C07_001T01_9000006454_51280cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51280cztM0_level2_quad_clean.evt
Size (bytes)845,752,32095,460,480
Size806.6 MB 91.0 MB
Events in quadrant A5,901,728693,224
Events in quadrant B5,162,647738,914
Events in quadrant C14,904,160306,114
Events in quadrant D4,763,290635,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227502
B0206302
C0492634
D0197212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74331692.273645%
B74334455.986816%
C7432452960.939182%
D74322943.955867%

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 7953 7434 46 46 0.58% 0.62%
B 7953 7434 264 264 3.32% 3.55%
C 7952 7434 4561 4561 57.36% 61.35%
D 7952 7434 240 240 3.02% 3.23%

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 1819996 9501.56 770 749 191.5
A 9 160 316936 1651.38 770 749 191.5
A 12 194 212762 1107.3 770 749 191.5
B 5 185 1094464 6696.25 765 739 163.3
B 4 170 313238 1913.25 765 739 163.3
B 10 60 279898 1709.13 765 739 163.3
C 4 12 11155271 85667.67 469 463 130.2
C 10 171 1283365 9852.54 469 463 130.2
C 1 45 140551 1075.86 469 463 130.2
D 12 2 526771 2551.32 734 705 206.2
D 8 176 281297 1360.82 734 705 206.2
D 10 181 270665 1309.25 734 705 206.2

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