ASTROSAT CZTI

Data Quality Report

Orbit 39447

Creation date: 2024-06-27T22:04:40.742743
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_025T17_9000005476_39447cztM0_level2.fits modeM0/AS1A12_025T17_9000005476_39447cztM0_level2_quad_clean.evt
Size (bytes)340,675,20093,611,520
Size324.9 MB 89.3 MB
Events in quadrant A3,260,217630,867
Events in quadrant B2,625,531663,684
Events in quadrant C3,213,617618,405
Events in quadrant D3,115,254565,362

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128313
B0108662
C0125262
D0125752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5086561.101062%
B5086260.511207%
C50861342.634683%
D50861573.086905%

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 7209 5087 38 38 0.53% 0.75%
B 7209 5087 8 8 0.11% 0.16%
C 7209 5087 109 109 1.51% 2.14%
D 7209 5087 121 121 1.68% 2.38%

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 468487 3788.6 610 598 123.5
A 10 83 415995 3363.56 610 598 123.5
A 13 248 8360 62.85 610 598 123.5
B 5 172 119094 1007.68 613 599 117.6
B 8 3 52142 438.32 613 599 117.6
B 5 255 46602 391.21 613 599 117.6
C 15 208 537322 3909.35 594 601 137.3
C 15 214 210299 1527.39 594 601 137.3
C 14 254 97866 708.46 594 601 137.3
D 2 249 536877 3746.99 588 571 143.1
D 12 227 134754 937.49 588 571 143.1
D 13 249 94343 655.15 588 571 143.1

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