ASTROSAT CZTI

Data Quality Report

Orbit 25517

Creation date: 2024-06-27T19:18:33.016059
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/AS1A07_147T01_9000003722_25517cztM0_level2.evt modeM0/AS1A07_147T01_9000003722_25517cztM0_level2_quad_clean.evt
Size (bytes)447,013,44075,277,440
Size426.3 MB 71.8 MB
Events in quadrant A3,268,064473,010
Events in quadrant B3,359,719485,106
Events in quadrant C3,259,061446,061
Events in quadrant D3,223,476435,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133760
B0137110
C0133750
D0134730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293150.238360%
B6293220.349595%
C6292470.746980%
D6292200.317864%

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 7548 6294 0 0 0.00% 0.00%
B 7548 6294 0 0 0.00% 0.00%
C 7547 6293 0 0 0.00% 0.00%
D 7547 6293 10 10 0.13% 0.16%

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 13 254 10505 57.75 848 835 167.4
A 3 137 7304 38.64 848 835 167.4
A 0 226 7235 38.22 848 835 167.4
B 0 190 31848 194.39 849 831 159.6
B 12 111 18673 111.82 849 831 159.6
B 11 111 17120 102.09 849 831 159.6
C 14 238 129363 691.3 799 806 186.0
C 3 233 6583 31.07 799 806 186.0
C 9 54 5825 26.99 799 806 186.0
D 1 52 81934 416.95 804 783 194.6
D 8 195 60166 305.1 804 783 194.6
D 2 234 24808 123.44 804 783 194.6

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