ASTROSAT CZTI

Data Quality Report

Orbit 29350

Creation date: 2024-06-27T20:03:05.627605
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_279T01_9000004218_29350cztM0_level2.evt modeM0/AS1T03_279T01_9000004218_29350cztM0_level2_quad_clean.evt
Size (bytes)940,976,640131,883,840
Size897.4 MB 125.8 MB
Events in quadrant A4,581,371867,391
Events in quadrant B4,890,427881,527
Events in quadrant C7,059,588834,071
Events in quadrant D11,326,708753,705

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195212
B0205694
C0277242
D0402022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9477390.411523%
B9476760.802026%
C94773393.577081%
D9477211322.296085%

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 11257 9479 6 6 0.05% 0.06%
B 11257 9479 3 3 0.03% 0.03%
C 11257 9479 31 31 0.28% 0.33%
D 11257 9479 1641 1641 14.58% 17.31%

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 13 32730 133.87 1177 1155 235.9
A 13 254 18641 74.14 1177 1155 235.9
A 3 137 11188 42.54 1177 1155 235.9
B 10 245 191967 862.21 1171 1142 221.3
B 0 229 44979 198.07 1171 1142 221.3
B 12 111 27121 117.38 1171 1142 221.3
C 10 9 1760664 6648.46 1130 1137 264.7
C 3 233 651358 2456.89 1130 1137 264.7
C 14 238 188809 709.13 1130 1137 264.7
D 1 52 3551588 14119.94 1049 1020 251.5
D 7 80 2682458 10663.57 1049 1020 251.5
D 8 195 463348 1838.59 1049 1020 251.5

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