ASTROSAT CZTI

Data Quality Report

Orbit 36943

Creation date: 2024-06-27T21:33:25.667212
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/AS1A11_024T01_9000005250_36943cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36943cztM0_level2_quad_clean.evt
Size (bytes)417,378,24057,193,920
Size398.0 MB 54.5 MB
Events in quadrant A2,389,823356,272
Events in quadrant B3,246,411353,078
Events in quadrant C2,562,319354,801
Events in quadrant D4,114,354329,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101823
B0127352
C0105102
D0154962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A482690.186490%
B48262004.144219%
C4826641.326150%
D48264639.593867%

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 6949 4827 5 5 0.07% 0.10%
B 6949 4827 166 166 2.39% 3.44%
C 6949 4827 53 53 0.76% 1.10%
D 6949 4827 437 437 6.29% 9.05%

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 222799 1981.41 555 545 112.2
A 13 254 8814 73.72 555 545 112.2
A 13 6 8171 67.99 555 545 112.2
B 0 229 264242 2513.0 548 536 104.9
B 5 172 206025 1958.22 548 536 104.9
B 5 184 137998 1309.95 548 536 104.9
C 0 10 242601 1917.5 538 543 126.2
C 15 214 207771 1641.59 538 543 126.2
C 10 49 10316 77.42 538 543 126.2
D 12 17 1064402 8446.73 512 498 126.0
D 10 253 436044 3457.96 512 498 126.0
D 13 171 120896 955.88 512 498 126.0

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