ASTROSAT CZTI

Data Quality Report

Orbit 43474

Creation date: 2024-06-27T22:52:23.126215
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/AS1A12_018T01_9000005874_43474cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43474cztM0_level2_quad_clean.evt
Size (bytes)583,908,48079,038,720
Size556.9 MB 75.4 MB
Events in quadrant A5,375,243563,616
Events in quadrant B2,402,129615,990
Events in quadrant C2,426,163592,654
Events in quadrant D11,022,245268,588

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194782
B0105092
C0102672
D0361312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499868613.725490%
B4998100.200080%
C499890.180072%
D4998372774.569828%

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 7092 4999 445 445 6.27% 8.90%
B 7092 4999 5 5 0.07% 0.10%
C 7092 4999 3 3 0.04% 0.06%
D 7092 4998 3649 3649 51.45% 73.01%

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 15 222 2347902 22005.11 523 513 106.7
A 10 83 535473 5014.87 523 513 106.7
A 15 237 423036 3960.85 523 513 106.7
B 0 245 117986 1121.96 554 538 104.7
B 0 189 42649 402.28 554 538 104.7
B 0 229 22730 212.0 554 538 104.7
C 15 214 220172 1721.45 549 553 127.6
C 3 233 48250 373.87 549 553 127.6
C 14 254 7173 51.89 549 553 127.6
D 1 52 9234958 134431.34 276 268 68.7
D 2 16 486311 7075.43 276 268 68.7
D 5 222 57456 832.5 276 268 68.7

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