ASTROSAT CZTI

Data Quality Report

Orbit 38048

Creation date: 2024-06-27T21:47:47.130149
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/AS1A11_044T01_9000005360_38048cztM0_level2.fits modeM0/AS1A11_044T01_9000005360_38048cztM0_level2_quad_clean.evt
Size (bytes)256,368,96074,560,320
Size244.5 MB 71.1 MB
Events in quadrant A2,253,266496,228
Events in quadrant B2,266,176505,068
Events in quadrant C2,156,371493,129
Events in quadrant D2,469,003452,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093982
B096761
C091041
D0102861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4419110.248925%
B4419451.018330%
C4419140.316814%
D4419771.742476%

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 4419 4419 6 6 0.14% 0.14%
B 4419 4419 26 26 0.59% 0.59%
C 4419 4419 12 12 0.27% 0.27%
D 4419 4419 64 64 1.45% 1.45%

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 275938 2762.23 485 475 99.7
A 12 16 28469 280.71 485 475 99.7
A 6 255 28301 279.03 485 475 99.7
B 4 171 99423 1070.2 485 473 92.5
B 5 172 59254 635.75 485 473 92.5
B 0 229 44073 471.56 485 473 92.5
C 15 214 185214 1657.19 477 481 111.5
C 1 23 55822 496.45 477 481 111.5
C 3 233 45104 400.3 477 481 111.5
D 5 222 146224 1254.17 473 459 116.2
D 1 52 111407 954.6 473 459 116.2
D 13 249 70528 602.88 473 459 116.2

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