ASTROSAT CZTI

Data Quality Report

Orbit 41055

Creation date: 2024-06-27T22:23:46.252487
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_029T02_9000005590_41055cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41055cztM0_level2_quad_clean.evt
Size (bytes)160,070,40047,563,200
Size152.7 MB 45.4 MB
Events in quadrant A1,501,884328,549
Events in quadrant B1,246,487336,423
Events in quadrant C1,500,437304,218
Events in quadrant D1,476,328289,177

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060321
B052851
C058391
D059701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A254570.275049%
B254540.157171%
C2545702.750491%
D254580.314342%

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 2545 2545 3 3 0.12% 0.12%
B 2545 2545 0 0 0.00% 0.00%
C 2545 2545 57 57 2.24% 2.24%
D 2545 2545 7 7 0.28% 0.28%

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 244853 3862.89 309 303 63.3
A 12 189 57440 902.53 309 303 63.3
A 13 6 4784 70.78 309 303 63.3
B 0 229 38759 650.82 304 296 59.1
B 12 111 7039 114.1 304 296 59.1
B 8 128 6807 110.17 304 296 59.1
C 14 254 135850 1950.33 296 299 69.5
C 15 214 116613 1673.55 296 299 69.5
C 0 10 92540 1327.18 296 299 69.5
D 12 79 247175 3307.11 302 293 74.7
D 13 249 62163 828.78 302 293 74.7
D 2 234 10329 134.44 302 293 74.7

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