ASTROSAT CZTI

Data Quality Report

Orbit 39771

Creation date: 2024-06-27T22:08:49.401814
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_022T01_9000005494_39771cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39771cztM0_level2_quad_clean.evt
Size (bytes)394,444,800107,144,640
Size376.2 MB 102.2 MB
Events in quadrant A3,424,948719,175
Events in quadrant B3,223,039730,379
Events in quadrant C3,474,072702,814
Events in quadrant D3,975,165640,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143043
B0140622
C0144172
D0165972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6476180.277949%
B6476530.818406%
C6476220.339716%
D64762193.381717%

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 9132 6479 11 11 0.12% 0.17%
B 9132 6479 33 33 0.36% 0.51%
C 9132 6479 19 19 0.21% 0.29%
D 9132 6479 160 160 1.75% 2.47%

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 514424 3511.14 717 703 146.3
A 2 79 68045 460.26 717 703 146.3
A 15 174 38812 260.46 717 703 146.3
B 5 172 113938 820.75 708 689 138.0
B 5 32 82042 589.59 708 689 138.0
B 5 255 73680 528.99 708 689 138.0
C 15 208 304640 1861.46 697 700 163.3
C 15 214 267351 1633.08 697 700 163.3
C 9 187 79593 483.17 697 700 163.3
D 12 227 764621 4514.9 688 668 169.2
D 12 233 198051 1166.52 688 668 169.2
D 13 249 148975 876.48 688 668 169.2

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