ASTROSAT CZTI

Data Quality Report

Orbit 20171014_A04_053T01_9000001610_level2

Creation date: 2025-11-17T18:17:28.329527
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/AS1A04_053T01_9000001610cztM0_level2.fits modeM0/AS1A04_053T01_9000001610cztM0_level2_quad_clean.evt
Size (bytes)75,991,68063,155,520
Size72.5 MB 60.2 MB
Events in quadrant A453,498349,105
Events in quadrant B428,218335,035
Events in quadrant C447,802334,106
Events in quadrant D384,648306,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174430
B0228520
C0173960
D0208430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84571111.312522%
B84575146.077805%
C8457420.496630%
D84571551.832801%

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 8472 8457 0 0 0.00% 0.00%
B 8472 8457 0 0 0.00% 0.00%
C 8472 8457 0 0 0.00% 0.00%
D 8472 8455 0 0 0.00% 0.00%

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 0 29 434 10.18 117 110 31.8
A 14 188 408 9.36 117 110 31.8
A 7 110 373 8.26 117 110 31.8
B 2 9 377 10.48 113 107 25.8
B 5 225 308 7.8 113 107 25.8
B 14 254 307 7.76 113 107 25.8
C 12 241 342 7.1 118 109 32.8
C 1 80 333 6.83 118 109 32.8
C 1 81 330 6.74 118 109 32.8
D 1 3 283 5.73 109 99 32.1
D 10 189 282 5.7 109 99 32.1
D 6 38 280 5.64 109 99 32.1

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