ASTROSAT CZTI

Data Quality Report

Orbit 41439

Creation date: 2024-06-27T22:29:01.304590
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_035T01_9000005666_41439cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41439cztM0_level2_quad_clean.evt
Size (bytes)682,243,200170,265,600
Size650.6 MB 162.4 MB
Events in quadrant A6,304,2031,150,900
Events in quadrant B4,932,1091,177,899
Events in quadrant C5,507,6651,112,503
Events in quadrant D7,682,799974,786

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250203
B0217782
C0229552
D0299282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10670240.224930%
B10670120.112465%
C106702041.911903%
D106708087.572634%

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 13446 10672 4 4 0.03% 0.04%
B 13446 10672 1 1 0.01% 0.01%
C 13446 10672 195 195 1.45% 1.83%
D 13446 10672 667 667 4.96% 6.25%

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 920176 3776.83 1191 1164 243.3
A 2 79 660828 2711.0 1191 1164 243.3
A 12 189 51824 208.19 1191 1164 243.3
B 0 190 207145 894.38 1183 1150 230.3
B 0 155 34169 143.36 1183 1150 230.3
B 12 111 29542 123.27 1183 1150 230.3
C 0 10 569763 2112.88 1150 1156 269.1
C 15 214 438544 1625.28 1150 1156 269.1
C 12 249 13619 46.31 1150 1156 269.1
D 1 52 1931973 6977.61 1125 1091 276.7
D 13 249 1112507 4016.32 1125 1091 276.7
D 13 171 114109 408.41 1125 1091 276.7

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