ASTROSAT CZTI

Data Quality Report

Orbit 00902

Creation date: 2024-06-27T14:04:30.953964
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/AS1P01_161T05_9000000180_00902cztM0_level2.evt modeM0/AS1P01_161T05_9000000180_00902cztM0_level2_quad_clean.evt
Size (bytes)1,300,570,56065,407,680
Size1.2 GB 62.4 MB
Events in quadrant A8,807,383377,531
Events in quadrant B11,412,719363,861
Events in quadrant C10,154,360372,164
Events in quadrant D8,530,480357,414

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313600
B0392070
C0353000
D0305490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A732360.081934%
B73225657.716471%
C7322250.341437%
D73221161.584267%

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 7373 7324 308 308 4.18% 4.21%
B 7372 7323 1394 1394 18.91% 19.04%
C 7372 7323 562 562 7.62% 7.67%
D 7372 7323 338 338 4.58% 4.62%

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 15 127 81477 144.23 2272 2288 549.1
A 11 79 9029 12.28 2272 2288 549.1
A 12 133 7589 9.65 2272 2288 549.1
B 3 0 2317939 4233.46 2300 2310 547.0
B 5 191 179237 323.46 2300 2310 547.0
B 0 220 76429 135.5 2300 2310 547.0
C 9 83 1614203 2662.95 2167 2247 605.3
C 3 111 29867 45.63 2167 2247 605.3
C 15 241 21679 32.1 2167 2247 605.3
D 12 188 191670 306.07 2145 2174 619.1
D 2 16 169433 270.16 2145 2174 619.1
D 10 157 28966 43.27 2145 2174 619.1

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