ASTROSAT CZTI

Data Quality Report

Orbit 12935

Creation date: 2024-06-27T16:34:06.997053
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/AS1A04_115T02_9000001900_12935cztM0_level2.evt modeM0/AS1A04_115T02_9000001900_12935cztM0_level2_quad_clean.evt
Size (bytes)970,476,480154,699,200
Size925.5 MB 147.5 MB
Events in quadrant A6,383,953964,967
Events in quadrant B8,272,549958,625
Events in quadrant C5,747,741976,723
Events in quadrant D8,135,881914,822

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269294
B0328623
C0256643
D0327243

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125741391.105456%
B125747245.757913%
C12574770.612375%
D125745644.485446%

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 15115 12577 0 0 0.00% 0.00%
B 15115 12577 384 384 2.54% 3.05%
C 15115 12577 0 0 0.00% 0.00%
D 15115 12577 430 430 2.84% 3.42%

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 1 162 195835 638.46 1509 1479 304.4
A 1 178 98638 319.17 1509 1479 304.4
A 1 161 84216 271.79 1509 1479 304.4
B 3 64 2006718 7055.81 1485 1446 284.2
B 4 239 366857 1285.75 1485 1446 284.2
B 12 111 33328 112.18 1485 1446 284.2
C 4 112 14445 38.08 1465 1475 340.6
C 8 128 12131 31.28 1465 1475 340.6
C 13 61 10787 27.34 1465 1475 340.6
D 1 52 2563992 7428.59 1438 1399 345.0
D 2 234 40745 114.06 1438 1399 345.0
D 8 195 31065 86.0 1438 1399 345.0

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