ASTROSAT CZTI

Data Quality Report

Orbit 12315

Creation date: 2024-06-27T16:25:20.454358
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_183T02_9000001816_12315cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12315cztM0_level2_quad_clean.evt
Size (bytes)469,281,60072,659,520
Size447.5 MB 69.3 MB
Events in quadrant A3,546,143439,678
Events in quadrant B3,673,529449,245
Events in quadrant C3,098,591447,566
Events in quadrant D3,460,789418,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146683
B0148522
C0133302
D0146012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6378430.674193%
B63781442.257761%
C6378290.454688%
D6378510.799624%

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 7574 6380 1 1 0.01% 0.02%
B 7574 6380 82 82 1.08% 1.29%
C 7574 6380 17 17 0.22% 0.27%
D 7574 6380 33 33 0.44% 0.52%

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 193348 1213.55 779 764 158.7
A 1 178 110323 690.38 779 764 158.7
A 1 161 94650 591.62 779 764 158.7
B 4 239 454569 3027.51 785 766 149.9
B 3 64 66258 436.92 785 766 149.9
B 0 197 29002 188.37 785 766 149.9
C 4 254 109712 612.04 766 773 178.0
C 13 61 5607 27.16 766 773 178.0
C 8 222 1893 6.29 766 773 178.0
D 1 52 301513 1667.06 753 734 180.4
D 8 195 80389 441.49 753 734 180.4
D 10 50 64972 356.04 753 734 180.4

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