ASTROSAT CZTI

Data Quality Report

Orbit 50948

Creation date: 2025-03-19T17:23:31.865792
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/AS1C07_001T01_9000006450_50948cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50948cztM0_level2_quad_clean.evt
Size (bytes)944,879,04089,354,880
Size901.1 MB 85.2 MB
Events in quadrant A12,978,986375,533
Events in quadrant B6,423,702690,663
Events in quadrant C5,889,331610,917
Events in quadrant D9,118,460517,867

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436610
B0241830
C0225670
D0320970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7330358248.867667%
B733174410.148684%
C73315066.902196%
D7331147120.065475%

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 7330 7330 3251 3251 44.35% 44.35%
B 7331 7330 488 488 6.66% 6.66%
C 7331 7331 411 411 5.61% 5.61%
D 7330 7330 1497 1497 20.42% 20.42%

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 8 43 6726989 45068.62 588 573 149.2
A 7 206 1742333 11670.22 588 573 149.2
A 9 13 720460 4823.42 588 573 149.2
B 4 206 2280348 14713.19 736 711 154.9
B 12 3 385428 2483.03 736 711 154.9
B 4 171 176436 1134.16 736 711 154.9
C 0 193 667207 3314.45 730 727 201.1
C 12 247 537351 2668.67 730 727 201.1
C 14 245 250764 1243.45 730 727 201.1
D 8 176 4493104 23024.29 685 661 195.1
D 15 184 332153 1698.94 685 661 195.1
D 10 181 291329 1489.71 685 661 195.1

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