ASTROSAT CZTI

Data Quality Report

Orbit 41087

Creation date: 2024-06-27T22:24:17.327828
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_095T02_9000005596_41087cztM0_level2.fits modeM0/AS1A12_095T02_9000005596_41087cztM0_level2_quad_clean.evt
Size (bytes)334,347,84089,553,600
Size318.9 MB 85.4 MB
Events in quadrant A3,008,176604,555
Events in quadrant B2,703,558617,179
Events in quadrant C2,876,459582,688
Events in quadrant D3,358,014520,529

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123163
B0118902
C0121452
D0139162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5521240.434704%
B5521230.416591%
C5521811.467126%
D55213095.596812%

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 7134 5522 12 12 0.17% 0.22%
B 7134 5522 16 16 0.22% 0.29%
C 7134 5522 80 80 1.12% 1.45%
D 7134 5522 242 242 3.39% 4.38%

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 551783 4423.87 602 588 124.6
A 12 189 47412 375.81 602 588 124.6
A 13 248 43237 342.3 602 588 124.6
B 5 255 141527 1205.15 600 584 117.0
B 0 190 66251 561.49 600 584 117.0
B 5 32 51253 433.25 600 584 117.0
C 15 214 233245 1700.24 586 589 136.8
C 0 10 220985 1610.65 586 589 136.8
C 14 254 123605 899.0 586 589 136.8
D 2 249 729998 5138.7 574 558 142.0
D 13 249 120673 846.18 574 558 142.0
D 5 32 106365 745.38 574 558 142.0

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