ASTROSAT CZTI

Data Quality Report

Orbit 39828

Creation date: 2024-06-27T22:09:23.757435
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_022T01_9000005498_39828cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39828cztM0_level2_quad_clean.evt
Size (bytes)643,366,08080,398,080
Size613.6 MB 76.7 MB
Events in quadrant A3,217,561640,900
Events in quadrant B3,599,110639,108
Events in quadrant C12,906,415177,803
Events in quadrant D3,638,706568,601

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133633
B0147452
C0423208
D0150124

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5834631.079877%
B58342143.668152%
C5833444776.238642%
D58331793.068747%

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 7177 5835 51 51 0.71% 0.87%
B 7177 5835 143 143 1.99% 2.45%
C 7177 5835 3997 3997 55.69% 68.50%
D 7177 5835 148 148 2.06% 2.54%

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 10 83 473894 3705.96 628 616 127.7
A 13 248 253736 1982.03 628 616 127.7
A 3 1 21135 160.67 628 616 127.7
B 4 171 433524 3641.06 617 601 118.9
B 0 229 355134 2981.77 617 601 118.9
B 5 32 104607 874.73 617 601 118.9
C 9 187 9905258 107796.0 390 391 91.9
C 15 208 1198243 13036.38 390 391 91.9
C 15 214 161081 1748.81 390 391 91.9
D 12 227 439046 2960.64 607 589 148.1
D 2 249 347970 2345.66 607 589 148.1
D 13 249 145920 981.33 607 589 148.1

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