ASTROSAT CZTI

Data Quality Report

Orbit 32835

Creation date: 2024-06-27T20:42:32.982514
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/AS1C06_002T09_9000004734_32835cztM0_level2.evt modeM0/AS1C06_002T09_9000004734_32835cztM0_level2_quad_clean.evt
Size (bytes)622,002,24097,358,400
Size593.2 MB 92.8 MB
Events in quadrant A3,149,346673,545
Events in quadrant B5,064,549612,320
Events in quadrant C2,942,623653,955
Events in quadrant D7,275,719589,454

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132503
B0188692
C0127752
D0259172

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5992580.967957%
B599282913.835113%
C5992460.767690%
D599272912.166222%

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 7274 5993 40 40 0.55% 0.67%
B 7274 5993 612 612 8.41% 10.21%
C 7274 5993 31 31 0.43% 0.52%
D 7274 5993 665 665 9.14% 11.10%

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 14 239 235367 1695.53 689 675 138.4
A 14 207 186586 1343.12 689 675 138.4
A 9 143 22876 160.39 689 675 138.4
B 5 172 2034772 16557.25 640 622 122.9
B 0 190 129310 1047.47 640 622 122.9
B 0 219 106760 863.93 640 622 122.9
C 0 10 181377 1190.2 662 668 151.8
C 1 241 64574 420.9 662 668 151.8
C 3 233 43424 281.6 662 668 151.8
D 8 195 2236428 14376.1 633 618 155.5
D 2 250 699503 4493.78 633 618 155.5
D 10 203 529830 3402.8 633 618 155.5

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