ASTROSAT CZTI

Data Quality Report

Orbit 25459

Creation date: 2024-06-27T19:17:53.429043
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/AS1A09_085T02_9000003716_25459cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25459cztM0_level2_quad_clean.evt
Size (bytes)535,415,04080,876,160
Size510.6 MB 77.1 MB
Events in quadrant A3,802,611511,972
Events in quadrant B3,348,354518,973
Events in quadrant C3,753,684494,957
Events in quadrant D4,885,521485,267

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155430
B0138390
C0151690
D0185590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6279861.369645%
B6279470.748527%
C62791332.118172%
D62793145.000796%

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 7519 6280 33 33 0.44% 0.53%
B 7519 6280 1 1 0.01% 0.02%
C 7519 6280 23 23 0.31% 0.37%
D 7519 6280 236 236 3.14% 3.76%

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 6 16 475125 2773.21 863 849 171.0
A 13 254 10500 56.43 863 849 171.0
A 0 226 7399 38.3 863 849 171.0
B 0 190 22272 136.51 850 830 157.1
B 12 111 19151 116.64 850 830 157.1
B 11 111 16967 102.74 850 830 157.1
C 9 54 402515 2118.6 825 831 189.6
C 14 238 134478 704.89 825 831 189.6
C 13 61 5672 25.53 825 831 189.6
D 1 52 1453266 7346.04 823 801 197.7
D 8 195 148082 744.89 823 801 197.7
D 12 233 125228 629.31 823 801 197.7

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