ASTROSAT CZTI

Data Quality Report

Orbit 30235

Creation date: 2024-06-27T20:12:28.825370
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/AS1A10_007T01_9000004350_30235cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30235cztM0_level2_quad_clean.evt
Size (bytes)545,549,76098,412,480
Size520.3 MB 93.9 MB
Events in quadrant A3,619,283629,845
Events in quadrant B5,222,902645,363
Events in quadrant C3,392,739632,437
Events in quadrant D3,842,760615,613

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148532
B0199462
C0140882
D0156022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65461171.787351%
B65471181.802352%
C65471211.848175%
D65471462.230029%

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 8616 6546 48 48 0.56% 0.73%
B 8617 6548 0 0 0.00% 0.00%
C 8617 6549 0 0 0.00% 0.00%
D 8617 6548 85 85 0.99% 1.30%

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 291157 1742.78 827 810 166.6
A 0 13 99530 592.56 827 810 166.6
A 8 192 25769 149.81 827 810 166.6
B 6 159 1929933 12072.57 831 808 159.8
B 0 190 22419 135.24 831 808 159.8
B 12 111 19761 118.61 831 808 159.8
C 14 238 134774 698.63 812 820 191.7
C 3 233 64679 333.05 812 820 191.7
C 2 114 15198 74.99 812 820 191.7
D 12 233 292141 1425.49 803 784 204.4
D 8 195 234403 1143.0 803 784 204.4
D 7 64 73464 355.59 803 784 204.4

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