ASTROSAT CZTI

Data Quality Report

Orbit 41193

Creation date: 2024-06-27T22:25:50.082588
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/AS1A12_101T03_9000005618_41193cztM0_level2.fits modeM0/AS1A12_101T03_9000005618_41193cztM0_level2_quad_clean.evt
Size (bytes)387,354,24089,133,120
Size369.4 MB 85.0 MB
Events in quadrant A2,910,760616,487
Events in quadrant B2,868,055625,842
Events in quadrant C5,267,771494,622
Events in quadrant D2,845,426561,512

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122622
B0127442
C0193582
D0128682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5730100.174520%
B5730871.518325%
C5730116720.366492%
D5730961.675393%

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 8355 5732 3 3 0.04% 0.05%
B 8355 5732 66 66 0.79% 1.15%
C 8355 5732 1115 1115 13.35% 19.45%
D 8355 5732 79 79 0.95% 1.38%

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 526161 4229.77 604 593 124.3
A 2 79 18548 144.5 604 593 124.3
A 12 189 15163 117.26 604 593 124.3
B 5 255 395581 3345.46 599 583 118.1
B 0 229 88571 745.22 599 583 118.1
B 0 190 26283 217.67 599 583 118.1
C 9 54 2533042 21322.42 508 509 118.8
C 0 10 538096 4526.16 508 509 118.8
C 15 214 211134 1773.34 508 509 118.8
D 13 249 318175 2217.97 590 573 143.2
D 12 16 165718 1153.29 590 573 143.2
D 2 234 29897 204.78 590 573 143.2

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