ASTROSAT CZTI

Data Quality Report

Orbit 23128

Creation date: 2024-06-27T18:50:13.505051
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/AS1A08_008T01_9000003414_23128cztM0_level2.evt modeM0/AS1A08_008T01_9000003414_23128cztM0_level2_quad_clean.evt
Size (bytes)961,606,080230,166,720
Size917.1 MB 219.5 MB
Events in quadrant A6,627,6201,584,534
Events in quadrant B5,851,9511,615,332
Events in quadrant C9,154,5101,437,422
Events in quadrant D6,663,8121,491,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0279483
B0255093
C0352503
D0284923

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121753332.735113%
B121761331.092313%
C1217611679.584428%
D121762542.086071%

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 14910 12175 139 139 0.93% 1.14%
B 14911 12176 1 1 0.01% 0.01%
C 14910 12175 838 838 5.62% 6.88%
D 14911 12177 142 142 0.95% 1.17%

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 6 16 989299 3358.98 1463 1430 294.1
A 13 254 19302 60.77 1463 1430 294.1
A 0 226 12828 38.76 1463 1430 294.1
B 0 190 56465 201.58 1464 1429 273.0
B 12 111 32567 114.05 1464 1429 273.0
B 11 111 28422 98.87 1464 1429 273.0
C 8 208 3187134 10358.19 1330 1337 307.6
C 0 10 432700 1402.52 1330 1337 307.6
C 14 238 211878 684.54 1330 1337 307.6
D 1 52 411959 1206.59 1414 1373 340.3
D 12 233 391550 1146.62 1414 1373 340.3
D 7 38 176857 515.7 1414 1373 340.3

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