ASTROSAT CZTI

Data Quality Report

Orbit 42664

Creation date: 2024-06-27T22:42:48.088475
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_013T01_9000005822_42664cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42664cztM0_level2_quad_clean.evt
Size (bytes)372,890,88088,401,600
Size355.6 MB 84.3 MB
Events in quadrant A2,945,676609,651
Events in quadrant B3,231,832611,524
Events in quadrant C3,388,834583,382
Events in quadrant D3,846,139520,322

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115852
B0127842
C0130162
D0147372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5022340.677021%
B50221583.146157%
C50221683.345281%
D50223196.352051%

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 7145 5023 23 23 0.32% 0.46%
B 7145 5023 122 122 1.71% 2.43%
C 7145 5023 180 180 2.52% 3.58%
D 7145 5023 279 279 3.90% 5.55%

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 540672 4495.1 587 577 120.2
A 13 248 106550 881.99 587 577 120.2
A 7 3 17541 141.19 587 577 120.2
B 0 245 322093 2899.5 576 561 110.9
B 0 168 278265 2504.27 576 561 110.9
B 10 247 113390 1017.46 576 561 110.9
C 9 54 804626 6114.03 569 574 131.5
C 15 214 211836 1606.44 569 574 131.5
C 14 254 126573 958.1 569 574 131.5
D 12 218 566638 4149.26 562 548 136.4
D 1 47 280410 2051.3 562 548 136.4
D 2 249 267145 1954.07 562 548 136.4

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