ASTROSAT CZTI

Data Quality Report

Orbit 36310

Creation date: 2022-06-16T16:12:04.707452
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_089T02_9000005188_36310cztM0_level2.evt modeM0/AS1A11_089T02_9000005188_36310cztM0_level2_quad_clean.evt
Size (bytes)787,763,52059,728,320
Size751.3 MB 57.0 MB
Events in quadrant A2,934,692404,579
Events in quadrant B7,405,228273,467
Events in quadrant C4,018,288380,007
Events in quadrant D9,083,183318,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126453
B0261402
C0157652
D0312782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A617380.129597%
B6173192731.216588%
C61732954.778876%
D6173181829.450834%

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 8799 6175 0 0 0.00% 0.00%
B 8799 6175 1753 1753 19.92% 28.39%
C 8799 6175 284 284 3.23% 4.60%
D 8799 6174 1865 1865 21.20% 30.21%

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 10 83 193580 1368.72 696 681 140.9
A 9 143 20565 141.09 696 681 140.9
A 13 6 11991 80.25 696 681 140.9
B 5 172 3579594 31644.98 578 563 113.1
B 4 171 1082241 9563.95 578 563 113.1
B 5 236 329677 2909.95 578 563 113.1
C 0 207 810621 5271.68 658 662 153.6
C 0 10 375522 2439.8 658 662 153.6
C 15 214 257026 1668.56 658 662 153.6
D 12 227 5032088 33853.42 603 585 148.6
D 12 6 842822 5666.82 603 585 148.6
D 12 235 512551 3444.66 603 585 148.6

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