ASTROSAT CZTI

Data Quality Report

Orbit 07264

Creation date: 2024-06-27T15:17:41.975662
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/AS1A02_155T01_9000000994_07264cztM0_level2.evt modeM0/AS1A02_155T01_9000000994_07264cztM0_level2_quad_clean.evt
Size (bytes)434,064,96097,882,560
Size414.0 MB 93.3 MB
Events in quadrant A2,998,264638,187
Events in quadrant B3,289,976656,321
Events in quadrant C3,310,699633,641
Events in quadrant D3,123,618601,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131013
B0139472
C0139132
D0136472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6226310.497912%
B6226861.381304%
C6226150.240925%
D6226681.092194%

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 7511 6227 0 0 0.00% 0.00%
B 7511 6227 35 35 0.47% 0.56%
C 7511 6227 2 2 0.03% 0.03%
D 7511 6227 42 42 0.56% 0.67%

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 8 15 28300 177.69 765 749 155.0
A 14 111 17792 109.92 765 749 155.0
A 0 226 7395 42.86 765 749 155.0
B 4 239 115720 786.84 779 764 146.1
B 0 214 62520 422.7 779 764 146.1
B 4 81 54590 368.42 779 764 146.1
C 7 247 380606 2217.02 744 748 171.3
C 9 68 13523 74.56 744 748 171.3
C 7 190 7841 41.4 744 748 171.3
D 2 14 217196 1208.85 733 711 179.1
D 2 33 83948 464.79 733 711 179.1
D 2 216 43229 237.42 733 711 179.1

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