ASTROSAT CZTI

Data Quality Report

Orbit 42767

Creation date: 2024-06-27T22:43:59.678491
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_42767cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42767cztM0_level2_quad_clean.evt
Size (bytes)342,247,68091,414,080
Size326.4 MB 87.2 MB
Events in quadrant A4,104,069591,369
Events in quadrant B2,523,181629,575
Events in quadrant C2,712,175607,890
Events in quadrant D2,905,388557,848

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154892
B0112352
C0113292
D0123932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54433456.338416%
B5443240.440933%
C5443190.349072%
D5443801.469778%

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 7296 5444 299 299 4.10% 5.49%
B 7296 5444 14 14 0.19% 0.26%
C 7296 5444 13 13 0.18% 0.24%
D 7296 5444 68 68 0.93% 1.25%

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 15 223 865250 7067.26 597 585 122.3
A 10 83 570937 4661.72 597 585 122.3
A 13 248 317543 2590.63 597 585 122.3
B 15 85 51584 435.36 601 585 117.1
B 5 172 42961 361.75 601 585 117.1
B 0 230 25334 211.27 601 585 117.1
C 15 214 227780 1638.52 597 602 138.6
C 14 254 94433 676.76 597 602 138.6
C 0 207 52115 371.54 597 602 138.6
D 2 249 308316 2116.76 596 578 145.4
D 12 233 134575 921.69 596 578 145.4
D 12 6 64814 441.84 596 578 145.4

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