ASTROSAT CZTI

Data Quality Report

Orbit 36631

Creation date: 2024-06-27T21:29:27.279826
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_049T03_9000005228_36631cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36631cztM0_level2_quad_clean.evt
Size (bytes)1,335,502,080117,063,360
Size1.2 GB 111.6 MB
Events in quadrant A5,256,366794,013
Events in quadrant B15,617,486564,564
Events in quadrant C6,029,675761,721
Events in quadrant D12,824,264683,684

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224144
B0535193
C0246003
D0456303

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10678180.168571%
B10678464243.472560%
C106782372.219517%
D10678188717.671849%

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 13544 10680 10 10 0.07% 0.09%
B 13544 10679 3752 3752 27.70% 35.13%
C 13544 10680 183 183 1.35% 1.71%
D 13544 10680 1749 1749 12.91% 16.38%

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 10 83 368954 1467.76 1241 1214 250.5
A 9 143 48902 190.33 1241 1214 250.5
A 13 6 18959 70.82 1241 1214 250.5
B 5 200 10596525 55969.83 981 954 189.3
B 0 190 326223 1718.19 981 954 189.3
B 5 255 288546 1519.17 981 954 189.3
C 0 10 773978 2798.93 1187 1197 276.1
C 15 214 443919 1603.49 1187 1197 276.1
C 14 254 156785 563.52 1187 1197 276.1
D 12 235 5435929 19779.23 1128 1098 274.8
D 2 250 911865 3314.6 1128 1098 274.8
D 12 17 786805 2859.46 1128 1098 274.8

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