ASTROSAT CZTI

Data Quality Report

Orbit 28502

Creation date: 2024-06-27T19:52:42.267566
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_123T03_9000004096_28502cztM0_level2.evt modeM0/AS1A10_123T03_9000004096_28502cztM0_level2_quad_clean.evt
Size (bytes)308,390,40040,178,880
Size294.1 MB 38.3 MB
Events in quadrant A1,641,323253,470
Events in quadrant B1,860,696258,424
Events in quadrant C1,711,736254,896
Events in quadrant D3,920,977235,377

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068540
B075800
C071250
D0137190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3002120.399734%
B3002411.365756%
C3002581.932045%
D300282127.348434%

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 3002 3002 1 1 0.03% 0.03%
B 3002 3002 27 27 0.90% 0.90%
C 3002 3002 0 0 0.00% 0.00%
D 3002 3002 774 774 25.78% 25.78%

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 15 174 18467 216.37 417 410 83.5
A 12 96 6896 77.72 417 410 83.5
A 13 254 5360 59.31 417 410 83.5
B 5 255 177619 2287.17 417 409 77.5
B 0 230 34505 440.06 417 409 77.5
B 0 182 8823 108.6 417 409 77.5
C 14 238 68516 717.0 414 419 95.0
C 7 247 15622 160.07 414 419 95.0
C 3 233 8013 79.96 414 419 95.0
D 1 52 1648223 18698.11 365 356 88.1
D 8 195 539783 6120.8 365 356 88.1
D 12 233 129413 1464.39 365 356 88.1

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