ASTROSAT CZTI

Data Quality Report

Orbit 22458

Creation date: 2024-06-27T18:41:22.663374
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/AS1A07_065T01_9000003338_22458cztM0_level2.evt modeM0/AS1A07_065T01_9000003338_22458cztM0_level2_quad_clean.evt
Size (bytes)564,151,680102,245,760
Size538.0 MB 97.5 MB
Events in quadrant A3,861,938645,738
Events in quadrant B4,465,549649,308
Events in quadrant C3,939,590622,585
Events in quadrant D4,263,732610,914

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166562
B0182732
C0168122
D0182283

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81661101.347049%
B81661952.387950%
C81661531.873622%
D81652312.829149%

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 9386 8166 0 0 0.00% 0.00%
B 9386 8167 75 75 0.80% 0.92%
C 9386 8166 11 11 0.12% 0.13%
D 9385 8166 123 123 1.31% 1.51%

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 13 254 11326 50.7 1000 978 204.1
A 3 137 9219 40.38 1000 978 204.1
A 0 226 8626 37.47 1000 978 204.1
B 10 245 540017 2802.83 991 964 192.3
B 12 111 24353 121.61 991 964 192.3
B 11 111 21775 108.21 991 964 192.3
C 14 238 148933 657.5 952 956 225.1
C 10 22 74985 328.93 952 956 225.1
C 13 61 6630 25.21 952 956 225.1
D 1 52 527675 2211.18 966 935 238.2
D 2 234 35033 143.14 966 935 238.2
D 13 172 31277 127.37 966 935 238.2

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