ASTROSAT CZTI

Data Quality Report

Orbit 22987

Creation date: 2024-06-27T18:48:19.356939
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_047T09_9000003396_22987cztM0_level2.evt modeM0/AS1A07_047T09_9000003396_22987cztM0_level2_quad_clean.evt
Size (bytes)506,473,92098,919,360
Size483.0 MB 94.3 MB
Events in quadrant A3,283,222645,320
Events in quadrant B3,528,895658,675
Events in quadrant C3,405,368632,370
Events in quadrant D4,678,434604,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135502
B0143482
C0138322
D0180662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6522961.471941%
B65221512.315241%
C65221792.744557%
D65224176.393744%

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 7707 6523 0 0 0.00% 0.00%
B 7707 6523 3 3 0.04% 0.05%
C 7707 6523 1 1 0.01% 0.02%
D 7707 6523 245 245 3.18% 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 13 254 9999 54.91 850 834 166.9
A 0 226 7211 38.21 850 834 166.9
A 3 137 6564 34.33 850 834 166.9
B 0 190 92698 586.47 851 831 156.6
B 0 189 77429 489.0 851 831 156.6
B 0 228 20050 122.69 851 831 156.6
C 14 238 134474 708.35 826 831 188.7
C 0 10 33095 171.01 826 831 188.7
C 7 247 13742 68.43 826 831 188.7
D 1 52 782708 4010.64 815 793 195.0
D 12 227 190997 975.61 815 793 195.0
D 13 249 162918 831.58 815 793 195.0

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