ASTROSAT CZTI

Data Quality Report

Orbit 35322

Creation date: 2022-04-10T18:16:39.783536
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_046T08_9000005062_35322cztM0_level2.evt modeM0/AS1A11_046T08_9000005062_35322cztM0_level2_quad_clean.evt
Size (bytes)870,727,68083,606,400
Size830.4 MB 79.7 MB
Events in quadrant A11,660,145352,818
Events in quadrant B7,503,721549,805
Events in quadrant C3,457,948649,751
Events in quadrant D3,409,041622,967

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380653
B0258192
C0133812
D0133772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5043414282.133651%
B5043195038.667460%
C50431863.688281%
D50432214.382312%

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 7075 5043 4052 4052 57.27% 80.35%
B 7075 5043 1537 1537 21.72% 30.48%
C 7076 5043 163 163 2.30% 3.23%
D 7076 5044 200 200 2.83% 3.97%

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 15 169 10126897 140861.26 360 352 71.9
A 10 83 77747 1076.57 360 352 71.9
A 8 192 27946 383.84 360 352 71.9
B 5 236 3945978 41591.75 497 487 94.9
B 5 172 1441617 15191.8 497 487 94.9
B 4 232 138316 1452.94 497 487 94.9
C 0 10 536213 4140.06 564 567 129.4
C 3 233 511489 3948.96 564 567 129.4
C 15 214 209756 1616.84 564 567 129.4
D 10 118 264453 1922.93 570 555 137.2
D 12 233 214139 1556.31 570 555 137.2
D 12 6 192221 1396.6 570 555 137.2

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