ASTROSAT CZTI

Data Quality Report

Orbit 34539

Creation date: 2022-02-16T20:01:50.412449
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/AS1A05_115T02_9000004934_34539cztM0_level2.evt modeM0/AS1A05_115T02_9000004934_34539cztM0_level2_quad_clean.evt
Size (bytes)470,681,28059,112,000
Size448.9 MB 56.4 MB
Events in quadrant A2,675,085367,226
Events in quadrant B3,411,631360,423
Events in quadrant C2,933,311365,945
Events in quadrant D4,889,478339,275

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110242
B0133461
C0116081
D0182011

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5097100.196194%
B50971803.531489%
C5097350.686678%
D50974258.338238%

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 7219 5098 0 0 0.00% 0.00%
B 7219 5098 117 117 1.62% 2.30%
C 7219 5098 23 23 0.32% 0.45%
D 7219 5098 337 337 4.67% 6.61%

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 40769 306.25 667 657 131.0
A 9 143 35130 263.19 667 657 131.0
A 13 6 12886 93.37 667 657 131.0
B 5 172 471754 3869.93 652 637 121.7
B 5 236 118358 967.0 652 637 121.7
B 0 245 106254 867.58 652 637 121.7
C 15 214 231036 1552.39 649 655 148.4
C 0 10 121883 816.88 649 655 148.4
C 14 67 46847 311.26 649 655 148.4
D 8 195 953081 6242.52 626 609 152.6
D 13 249 360838 2360.95 626 609 152.6
D 1 52 296844 1941.53 626 609 152.6

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