ASTROSAT CZTI

Data Quality Report

Orbit 23656

Creation date: 2024-06-27T18:57:17.507132
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/AS1A07_160T07_9000003494_23656cztM0_level2.evt modeM0/AS1A07_160T07_9000003494_23656cztM0_level2_quad_clean.evt
Size (bytes)208,241,28037,725,120
Size198.6 MB 36.0 MB
Events in quadrant A1,450,356234,905
Events in quadrant B1,639,623239,850
Events in quadrant C1,449,708232,865
Events in quadrant D1,569,438229,121

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061311
B066511
C061381
D066141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28681806.276151%
B28682247.810321%
C28671946.766655%
D28671736.034182%

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 3068 2868 0 0 0.00% 0.00%
B 3068 2868 25 25 0.81% 0.87%
C 3067 2867 0 0 0.00% 0.00%
D 3067 2867 23 23 0.75% 0.80%

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 13 254 4635 53.88 376 366 79.2
A 3 137 3584 40.62 376 366 79.2
A 0 226 3190 35.65 376 366 79.2
B 3 64 165387 2172.0 370 359 76.0
B 12 111 9204 116.41 370 359 76.0
B 0 229 8649 109.11 370 359 76.0
C 14 238 53312 616.46 356 357 85.9
C 7 247 7843 87.15 356 357 85.9
C 13 61 2464 24.53 356 357 85.9
D 13 189 61486 674.48 365 352 90.6
D 9 85 57010 625.09 365 352 90.6
D 12 233 45535 498.49 365 352 90.6

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