ASTROSAT CZTI

Data Quality Report

Orbit 37272

Creation date: 2024-06-27T21:37:43.622357
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/AS1A10_103T03_9000005296_37272cztM0_level2.evt modeM0/AS1A10_103T03_9000005296_37272cztM0_level2_quad_clean.evt
Size (bytes)429,143,04067,155,840
Size409.3 MB 64.0 MB
Events in quadrant A3,236,048410,632
Events in quadrant B2,738,729433,241
Events in quadrant C2,878,869434,019
Events in quadrant D3,788,390389,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129013
B0114302
C0115942
D0147962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52182234.273668%
B5218520.996550%
C5218611.169030%
D52183987.627443%

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 7070 5219 157 157 2.22% 3.01%
B 7070 5219 25 25 0.35% 0.48%
C 7070 5219 51 51 0.72% 0.98%
D 7070 5219 334 334 4.72% 6.40%

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 15 237 591825 4954.05 593 582 119.3
A 10 83 261215 2183.85 593 582 119.3
A 9 143 35254 290.52 593 582 119.3
B 5 172 154044 1350.28 603 588 113.6
B 0 213 123551 1081.97 603 588 113.6
B 0 190 51942 451.87 603 588 113.6
C 15 214 224938 1630.74 599 603 137.6
C 0 10 207393 1503.2 599 603 137.6
C 14 254 109341 790.44 599 603 137.6
D 13 249 543293 3903.32 575 559 139.0
D 2 249 358711 2575.81 575 559 139.0
D 10 253 351986 2527.45 575 559 139.0

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