ASTROSAT CZTI

Data Quality Report

Orbit 35409

Creation date: 2022-09-12T18:57:45.523056
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/AS1T05_022T01_9000005070_35409cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35409cztM0_level2_quad_clean.evt
Size (bytes)649,664,64054,561,600
Size619.6 MB 52.0 MB
Events in quadrant A2,433,963352,336
Events in quadrant B7,969,361328,774
Events in quadrant C3,142,028349,949
Events in quadrant D5,797,721275,662

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101412
B0270881
C0122391
D0206671

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491170.142537%
B4911219544.695581%
C4911941.914070%
D4911121424.720016%

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 6913 4912 1 1 0.01% 0.02%
B 6913 4912 1871 1871 27.06% 38.09%
C 6913 4912 79 79 1.14% 1.61%
D 6913 4912 1124 1124 16.26% 22.88%

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 10 83 98042 820.55 589 580 118.8
A 9 143 24634 202.52 589 580 118.8
A 7 16 22815 187.2 589 580 118.8
B 4 251 2135124 23738.21 464 451 89.9
B 5 236 987941 10981.19 464 451 89.9
B 5 31 918986 10214.39 464 451 89.9
C 0 10 570755 4290.5 571 575 132.9
C 15 214 203430 1526.45 571 575 132.9
C 0 207 96920 724.98 571 575 132.9
D 7 80 3177901 26497.32 482 466 119.9
D 8 195 254228 2116.18 482 466 119.9
D 13 249 170704 1419.65 482 466 119.9

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