ASTROSAT CZTI

Data Quality Report

Orbit 38201

Creation date: 2024-06-27T21:49:40.813980
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/AS1A07_145T01_9000005370_38201cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38201cztM0_level2_quad_clean.evt
Size (bytes)343,200,96099,921,600
Size327.3 MB 95.3 MB
Events in quadrant A2,934,466682,401
Events in quadrant B2,572,257710,647
Events in quadrant C3,012,780668,196
Events in quadrant D3,779,535600,311

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118603
B0107012
C0119352
D0146552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5204170.326672%
B5204200.384320%
C52041082.075327%
D52042725.226749%

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 5205 6 6 0.08% 0.12%
B 7296 5205 7 7 0.10% 0.13%
C 7296 5205 97 97 1.33% 1.86%
D 7296 5205 277 277 3.80% 5.32%

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 362476 2867.98 628 617 126.2
A 12 189 79821 627.74 628 617 126.2
A 9 143 39235 306.07 628 617 126.2
B 5 172 48045 398.42 634 619 119.0
B 12 111 14379 115.59 634 619 119.0
B 11 111 13111 104.94 634 619 119.0
C 14 254 309092 2157.59 619 625 143.0
C 15 214 214903 1498.78 619 625 143.0
C 2 16 25451 173.65 619 625 143.0
D 2 250 551571 3770.97 609 593 146.1
D 13 171 259128 1769.45 609 593 146.1
D 13 249 178607 1218.35 609 593 146.1

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