ASTROSAT CZTI

Data Quality Report

Orbit 39952

Creation date: 2024-06-27T22:10:32.152321
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_9000005514_39952cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39952cztM0_level2_quad_clean.evt
Size (bytes)363,908,16089,038,080
Size347.0 MB 84.9 MB
Events in quadrant A3,002,288607,681
Events in quadrant B2,727,473628,861
Events in quadrant C2,428,318601,897
Events in quadrant D4,904,107490,057

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121172
B0117781
C0106571
D0182781

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52451082.059104%
B52451001.906578%
C524540.076263%
D524565712.526215%

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 7189 5246 100 100 1.39% 1.91%
B 7189 5245 83 83 1.15% 1.58%
C 7189 5246 3 3 0.04% 0.06%
D 7189 5245 702 702 9.76% 13.38%

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 10 83 426638 3694.04 566 555 115.3
A 6 10 300968 2604.51 566 555 115.3
A 7 192 35931 306.7 566 555 115.3
B 5 255 272118 2519.94 565 549 107.8
B 4 171 180015 1665.3 565 549 107.8
B 0 230 16135 144.63 565 549 107.8
C 15 214 222164 1749.36 550 554 126.7
C 9 54 20823 160.0 550 554 126.7
C 0 10 15296 116.37 550 554 126.7
D 1 47 2030473 16129.1 518 503 125.9
D 2 249 247979 1966.32 518 503 125.9
D 12 218 226055 1792.12 518 503 125.9

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