ASTROSAT CZTI

Data Quality Report

Orbit 39145

Creation date: 2024-06-27T22:01:06.830920
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_054T02_9000005444_39145cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39145cztM0_level2_quad_clean.evt
Size (bytes)395,487,36085,916,160
Size377.2 MB 81.9 MB
Events in quadrant A2,738,904601,043
Events in quadrant B2,333,494606,213
Events in quadrant C2,473,210569,894
Events in quadrant D6,704,593473,146

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113163
B0104302
C0104532
D0234472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5010310.618762%
B501070.139721%
C501090.179641%
D501078615.688623%

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 7013 5011 14 14 0.20% 0.28%
B 7013 5011 4 4 0.06% 0.08%
C 7013 5011 3 3 0.04% 0.06%
D 7013 5011 701 701 10.00% 13.99%

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 409566 3578.8 563 552 114.3
A 14 235 81017 704.05 563 552 114.3
A 9 143 29850 256.35 563 552 114.3
B 5 172 101026 931.31 560 545 107.9
B 15 85 20850 188.2 560 545 107.9
B 12 111 12914 114.64 560 545 107.9
C 15 214 209867 1629.01 549 551 128.5
C 9 187 72713 561.6 549 551 128.5
C 2 16 33284 254.74 549 551 128.5
D 12 235 4099605 31941.4 525 509 128.3
D 5 222 331478 2579.01 525 509 128.3
D 2 249 129069 1001.78 525 509 128.3

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