ASTROSAT CZTI

Data Quality Report

Orbit 36794

Creation date: 2024-06-27T21:31:45.734151
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/AS1A11_075T01_9000005244_36794cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36794cztM0_level2_quad_clean.evt
Size (bytes)685,321,92079,237,440
Size653.6 MB 75.6 MB
Events in quadrant A3,228,378559,595
Events in quadrant B10,150,595374,777
Events in quadrant C3,297,517566,570
Events in quadrant D3,721,813527,710

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131103
B0338732
C0131302
D0147372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52731923.641191%
B5273321560.970984%
C52731783.375687%
D52732394.532524%

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 7066 5274 132 132 1.87% 2.50%
B 7066 5273 2905 2905 41.11% 55.09%
C 7066 5274 148 148 2.09% 2.81%
D 7066 5274 230 230 3.26% 4.36%

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 16 464420 3747.68 608 598 123.8
A 10 83 228832 1844.13 608 598 123.8
A 13 248 100026 803.38 608 598 123.8
B 12 1 7501122 84054.08 472 460 89.2
B 5 172 167781 1875.03 472 460 89.2
B 0 221 127232 1420.63 472 460 89.2
C 1 23 340747 2442.76 602 609 139.2
C 15 214 236498 1694.08 602 609 139.2
C 0 207 177180 1268.07 602 609 139.2
D 13 249 463797 3211.15 596 580 144.3
D 12 227 461601 3195.93 596 580 144.3
D 5 222 179920 1243.23 596 580 144.3

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