ASTROSAT CZTI

Data Quality Report

Orbit 17403

Creation date: 2024-06-27T17:36:04.818884
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/AS1T03_030T01_9000002574_17403cztM0_level2.evt modeM0/AS1T03_030T01_9000002574_17403cztM0_level2_quad_clean.evt
Size (bytes)721,635,840115,813,440
Size688.2 MB 110.4 MB
Events in quadrant A3,986,993771,217
Events in quadrant B4,629,933761,167
Events in quadrant C4,349,972738,445
Events in quadrant D8,318,258651,728

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174302
B0193312
C0178842
D0304552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8411700.832243%
B84122803.328578%
C84121401.664289%
D8412144417.165953%

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 8886 8413 0 0 0.00% 0.00%
B 8887 8414 80 80 0.90% 0.95%
C 8887 8414 0 0 0.00% 0.00%
D 8887 8414 1197 1197 13.47% 14.23%

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 0 226 8943 37.86 1035 1012 209.5
A 12 194 7708 31.96 1035 1012 209.5
A 3 137 7412 30.55 1035 1012 209.5
B 7 220 324896 1633.27 1021 993 198.3
B 0 197 81762 407.28 1021 993 198.3
B 15 35 58318 289.06 1021 993 198.3
C 3 233 218338 938.34 986 992 231.6
C 14 238 149171 639.73 986 992 231.6
C 5 218 122285 523.65 986 992 231.6
D 11 176 3193326 13979.88 935 904 228.4
D 13 232 838404 3667.48 935 904 228.4
D 1 52 409430 1788.97 935 904 228.4

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