ASTROSAT CZTI

Data Quality Report

Orbit 35488

Creation date: 2022-04-22T00:13:50.369998
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_097T22_9000005082_35488cztM0_level2.evt modeM0/AS1A11_097T22_9000005082_35488cztM0_level2_quad_clean.evt
Size (bytes)494,115,84097,482,240
Size471.2 MB 93.0 MB
Events in quadrant A2,981,633635,386
Events in quadrant B4,879,695629,738
Events in quadrant C3,532,777649,126
Events in quadrant D3,164,902620,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129243
B0184972
C0142232
D0132932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5979711.187490%
B597961010.202375%
C5979921.538719%
D5979430.719184%

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 9023 5981 36 36 0.40% 0.60%
B 9023 5981 391 391 4.33% 6.54%
C 9023 5981 55 55 0.61% 0.92%
D 9023 5981 32 32 0.35% 0.54%

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 15 169 172002 1237.41 688 673 138.5
A 10 83 143869 1034.22 688 673 138.5
A 13 254 9290 62.24 688 673 138.5
B 4 171 903896 7099.77 662 644 127.2
B 5 236 705892 5543.41 662 644 127.2
B 5 172 490453 3850.01 662 644 127.2
C 0 207 269440 1698.78 678 681 158.2
C 15 214 246213 1551.96 678 681 158.2
C 0 10 213153 1343.0 678 681 158.2
D 8 195 167980 1023.98 678 659 163.4
D 13 249 114248 695.15 678 659 163.4
D 2 153 81031 491.86 678 659 163.4

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