ASTROSAT CZTI

Data Quality Report

Orbit 10274

Creation date: 2024-06-27T15:57:18.363144
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/AS1C02_021T01_9000001482_10274cztM0_level2.evt modeM0/AS1C02_021T01_9000001482_10274cztM0_level2_quad_clean.evt
Size (bytes)478,411,20090,881,280
Size456.2 MB 86.7 MB
Events in quadrant A3,312,449580,838
Events in quadrant B3,646,110595,977
Events in quadrant C3,051,292580,709
Events in quadrant D4,045,796549,799

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139613
B0149432
C0135222
D0159882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63741402.196423%
B63741642.572953%
C6374841.317854%
D63741983.106370%

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 7554 6374 66 66 0.87% 1.04%
B 7554 6374 33 33 0.44% 0.52%
C 7554 6374 6 6 0.08% 0.09%
D 7554 6374 141 141 1.87% 2.21%

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 8 15 97252 573.09 832 818 168.3
A 0 226 7745 41.17 832 818 168.3
A 3 1 7621 40.43 832 818 168.3
B 4 239 214975 1413.76 803 785 151.5
B 0 85 117831 772.56 803 785 151.5
B 11 51 94641 619.5 803 785 151.5
C 14 67 8895 44.56 780 786 182.0
C 13 61 5725 27.14 780 786 182.0
C 3 202 1963 6.47 780 786 182.0
D 8 195 422736 2192.8 797 775 192.4
D 2 14 185395 959.41 797 775 192.4
D 2 152 133951 692.07 797 775 192.4

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