ASTROSAT CZTI

Data Quality Report

Orbit 20190611_C04_001T01_9000002984_level2

Creation date: 2025-12-01T09:11:23.538840
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/AS1C04_001T01_9000002984cztM0_level2.fits modeM0/AS1C04_001T01_9000002984cztM0_level2_quad_clean.evt
Size (bytes)760,818,240809,867,520
Size725.6 MB 772.3 MB
Events in quadrant A4,703,3565,086,550
Events in quadrant B4,504,9065,140,969
Events in quadrant C4,657,6145,029,150
Events in quadrant D3,798,3143,899,944

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016000
B016000
C016000
D016000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01901100
B01743240
C01645030
D02654910

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7832831974.081554%
B7832713081.669922%
C7832812271.566490%
D783271281816.364727%

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 91754 78305 0 0 0.00% 0.00%
B 91754 78328 0 0 0.00% 0.00%
C 91754 78329 0 0 0.00% 0.00%
D 91754 78306 0 0 0.00% 0.00%

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 0 29 4679 11.81 1225 1156 298.3
A 7 110 3731 8.63 1225 1156 298.3
A 9 19 3690 8.5 1225 1156 298.3
B 5 128 2965 7.94 1195 1146 229.0
B 3 17 2948 7.87 1195 1146 229.0
B 14 254 2936 7.82 1195 1146 229.0
C 3 126 3226 6.63 1230 1156 312.3
C 12 241 3174 6.46 1230 1156 312.3
C 3 235 3125 6.3 1230 1156 312.3
D 10 189 2812 6.34 1086 993 286.8
D 3 14 2761 6.16 1086 993 286.8
D 6 231 2657 5.8 1086 993 286.8

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