ASTROSAT CZTI

Data Quality Report

Orbit 10050

Creation date: 2024-06-27T15:54:15.592362
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/AS1A03_052T01_9000001436_10050cztM0_level2.evt modeM0/AS1A03_052T01_9000001436_10050cztM0_level2_quad_clean.evt
Size (bytes)581,411,52078,396,480
Size554.5 MB 74.8 MB
Events in quadrant A3,374,439477,752
Events in quadrant B3,860,388484,781
Events in quadrant C3,215,309475,706
Events in quadrant D6,663,144427,485

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01502
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01505251
B01638142
C01493839
D024898146

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7290831.138546%
B72971492.041935%
C7296670.918311%
D727878010.717230%

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 7624 7314 1 1 0.01% 0.01%
B 7624 7313 41 41 0.54% 0.56%
C 7624 7314 0 0 0.00% 0.00%
D 7624 7312 631 631 8.28% 8.63%

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 105659 599.92 846 827 174.7
A 0 226 7612 38.83 846 827 174.7
A 13 253 7541 38.42 846 827 174.7
B 10 247 229488 1368.84 854 833 167.0
B 4 81 225151 1342.88 854 833 167.0
B 0 214 41992 246.4 854 833 167.0
C 13 61 6182 27.72 822 827 193.2
C 8 222 5527 24.33 822 827 193.2
C 14 67 5431 23.84 822 827 193.2
D 2 16 2635075 12575.42 783 765 209.5
D 1 52 522272 2489.52 783 765 209.5
D 1 20 225934 1074.89 783 765 209.5

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