ASTROSAT CZTI

Data Quality Report

Orbit 04995

Creation date: 2024-06-27T14:49:52.270326
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/AS1G05_115T01_9000000634_04995cztM0_level2.evt modeM0/AS1G05_115T01_9000000634_04995cztM0_level2_quad_clean.evt
Size (bytes)442,077,12065,612,160
Size421.6 MB 62.6 MB
Events in quadrant A2,816,501397,120
Events in quadrant B2,970,400398,181
Events in quadrant C2,667,816397,109
Events in quadrant D4,527,351376,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124062
B0127271
C0121931
D0175891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5977901.505772%
B5977841.405387%
C5977530.886732%
D59773946.591936%

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 7082 5978 5 5 0.07% 0.08%
B 7082 5978 4 4 0.06% 0.07%
C 7082 5978 0 0 0.00% 0.00%
D 7082 5978 322 322 4.55% 5.39%

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 4 2 66652 464.94 700 683 141.9
A 13 251 26950 185.13 700 683 141.9
A 0 50 12487 83.19 700 683 141.9
B 0 219 131302 991.09 704 686 131.8
B 15 204 81808 615.54 704 686 131.8
B 15 54 24522 180.86 704 686 131.8
C 8 222 9052 54.07 680 683 154.8
C 13 61 5747 32.72 680 683 154.8
C 1 16 4847 26.9 680 683 154.8
D 2 136 477171 2920.99 671 650 163.1
D 2 33 442420 2707.98 671 650 163.1
D 13 53 354469 2168.85 671 650 163.1

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