ASTROSAT CZTI

Data Quality Report

Orbit 36808

Creation date: 2024-06-27T21:31:54.466337
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_075T01_9000005244_36808cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36808cztM0_level2_quad_clean.evt
Size (bytes)767,600,64062,513,280
Size732.0 MB 59.6 MB
Events in quadrant A2,742,632471,833
Events in quadrant B13,682,074126,191
Events in quadrant C2,949,979472,492
Events in quadrant D3,513,072448,652

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116973
B0442772
C0120422
D0141902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5310290.546139%
B5310513396.666667%
C5310821.544256%
D53101733.258004%

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 7073 5311 12 12 0.17% 0.23%
B 7072 5309 5042 5042 71.30% 94.97%
C 7073 5311 59 59 0.83% 1.11%
D 7073 5310 140 140 1.98% 2.64%

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 244509 1937.96 615 604 125.9
A 13 248 53195 417.87 615 604 125.9
A 9 143 20975 161.86 615 604 125.9
B 12 1 11655265 265678.46 225 220 43.9
B 5 172 926969 21125.38 225 220 43.9
B 0 190 50235 1140.1 225 220 43.9
C 15 214 227386 1614.92 601 606 140.4
C 14 254 191366 1358.42 601 606 140.4
C 0 10 149362 1059.31 601 606 140.4
D 13 249 499466 3403.23 597 581 146.6
D 1 20 289400 1970.23 597 581 146.6
D 13 171 147740 1003.87 597 581 146.6

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