ASTROSAT CZTI

Data Quality Report

Orbit 39691

Creation date: 2024-06-27T22:07:47.349135
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_051T01_9000005490_39691cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39691cztM0_level2_quad_clean.evt
Size (bytes)596,689,92083,459,520
Size569.0 MB 79.6 MB
Events in quadrant A11,057,832277,224
Events in quadrant B2,779,712671,495
Events in quadrant C4,437,121632,294
Events in quadrant D3,407,875580,483

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364373
B0115782
C0167452
D0136372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5217351667.395055%
B5217360.690052%
C52171021.955147%
D52171462.798543%

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 7131 5218 2894 2894 40.58% 55.46%
B 7131 5218 17 17 0.24% 0.33%
C 7131 5218 148 148 2.08% 2.84%
D 7131 5218 119 119 1.67% 2.28%

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 15 222 8074356 84061.99 469 463 96.0
A 0 8 648618 6748.32 469 463 96.0
A 10 83 350557 3645.03 469 463 96.0
B 5 172 135021 1133.06 617 600 118.6
B 5 255 68960 576.22 617 600 118.6
B 10 246 43948 365.39 617 600 118.6
C 15 208 1377973 9958.77 593 598 138.3
C 9 187 508751 3674.07 593 598 138.3
C 15 214 217970 1571.65 593 598 138.3
D 12 233 559337 3799.18 598 582 147.1
D 12 227 263239 1785.9 598 582 147.1
D 2 250 122891 831.62 598 582 147.1

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