ASTROSAT CZTI

Data Quality Report

Orbit 11450

Creation date: 2024-06-27T16:13:06.304636
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/AS1A04_021T03_9000001678_11450cztM0_level2.evt modeM0/AS1A04_021T03_9000001678_11450cztM0_level2_quad_clean.evt
Size (bytes)257,797,44036,414,720
Size245.9 MB 34.7 MB
Events in quadrant A1,693,250218,482
Events in quadrant B2,572,260208,745
Events in quadrant C1,580,503233,085
Events in quadrant D1,745,616217,496

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070342
B096791
C066591
D072381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31571153.642699%
B315735311.181501%
C3157792.502376%
D3157973.072537%

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 4363 3160 3 3 0.07% 0.09%
B 4363 3160 142 142 3.25% 4.49%
C 4363 3160 0 0 0.00% 0.00%
D 4363 3160 12 12 0.28% 0.38%

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 1 162 30876 361.32 408 399 84.3
A 8 5 21572 251.02 408 399 84.3
A 1 178 18259 211.74 408 399 84.3
B 4 239 920747 12031.22 396 386 76.5
B 11 51 44855 581.31 396 386 76.5
B 15 204 24478 314.94 396 386 76.5
C 13 61 3008 27.43 405 406 94.8
C 3 202 966 5.9 405 406 94.8
C -1 -1 -1 -1.0 405 406 94.8
D 13 104 41943 434.03 400 388 95.7
D 5 222 39508 408.6 400 388 95.7
D 13 249 37171 384.19 400 388 95.7

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