ASTROSAT CZTI

Data Quality Report

Orbit 36068

Creation date: 2022-08-10T04:31:00.829512
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/AS1T04_069T01_9000005158_36068cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36068cztM0_level2_quad_clean.evt
Size (bytes)508,536,00064,863,360
Size485.0 MB 61.9 MB
Events in quadrant A2,656,992423,301
Events in quadrant B3,166,733413,930
Events in quadrant C5,966,765350,340
Events in quadrant D3,235,584389,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115173
B0129662
C0213182
D0135192

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A552080.144928%
B55201663.007246%
C552090416.376812%
D55202023.659420%

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 7194 5521 3 3 0.04% 0.05%
B 7194 5521 115 115 1.60% 2.08%
C 7194 5521 867 867 12.05% 15.70%
D 7194 5521 160 160 2.22% 2.90%

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 180115 1389.87 627 614 129.1
A 9 143 18782 140.67 627 614 129.1
A 13 6 13197 97.43 627 614 129.1
B 5 172 352032 2920.35 620 604 120.3
B 0 213 127720 1056.33 620 604 120.3
B 0 190 79644 656.82 620 604 120.3
C 9 187 1903782 14461.2 558 561 131.6
C 15 208 1403011 10656.21 558 561 131.6
C 15 214 212706 1611.94 558 561 131.6
D 12 6 395503 2699.8 598 581 146.3
D 12 17 150536 1025.14 598 581 146.3
D 13 249 115348 784.58 598 581 146.3

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