ASTROSAT CZTI

Data Quality Report

Orbit 40145

Creation date: 2024-06-27T22:12:53.286179
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_042T01_9000005522_40145cztM0_level2.fits modeM0/AS1A12_042T01_9000005522_40145cztM0_level2_quad_clean.evt
Size (bytes)634,803,84071,706,240
Size605.4 MB 68.4 MB
Events in quadrant A2,995,321593,062
Events in quadrant B2,898,709612,028
Events in quadrant C13,173,67474,460
Events in quadrant D4,004,001507,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122113
B0127072
C0428622
D0158592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5480561.021898%
B5480601.094891%
C5480489889.379562%
D54804157.572993%

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 7273 5481 57 57 0.78% 1.04%
B 7273 5481 15 15 0.21% 0.27%
C 7272 5479 4853 4853 66.74% 88.57%
D 7273 5481 443 443 6.09% 8.08%

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 459211 3914.61 575 563 117.2
A 2 79 195403 1662.98 575 563 117.2
A 12 189 98062 832.16 575 563 117.2
B 4 170 416622 3762.11 572 555 110.6
B 0 190 127442 1147.32 572 555 110.6
B 4 171 85832 771.08 572 555 110.6
C 9 187 12050076 202788.45 252 253 59.4
C 15 214 110497 1855.31 252 253 59.4
C 14 254 11110 182.71 252 253 59.4
D 12 0 1455300 11053.02 540 524 131.6
D 12 227 233080 1766.9 540 524 131.6
D 13 249 65047 490.23 540 524 131.6

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