ASTROSAT CZTI

Data Quality Report

Orbit 38407

Creation date: 2024-06-27T21:52:20.817762
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_9000005386_38407cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38407cztM0_level2_quad_clean.evt
Size (bytes)318,461,76089,815,680
Size303.7 MB 85.7 MB
Events in quadrant A2,980,833600,401
Events in quadrant B2,776,822613,231
Events in quadrant C2,604,469590,102
Events in quadrant D3,012,559544,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122053
B0118532
C0110992
D0125052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5310561.054614%
B5310340.640301%
C5310200.376648%
D5310601.129944%

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 7131 5311 32 32 0.45% 0.60%
B 7131 5311 23 23 0.32% 0.43%
C 7131 5311 12 12 0.17% 0.23%
D 7131 5311 47 47 0.66% 0.88%

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 399604 3431.78 577 566 116.3
A 9 143 113689 972.87 577 566 116.3
A 13 248 81286 694.2 577 566 116.3
B 0 155 135892 1236.64 577 562 109.4
B 4 171 95313 865.83 577 562 109.4
B 0 183 81153 736.44 577 562 109.4
C 15 214 224672 1673.17 572 576 133.9
C 5 250 93741 695.6 572 576 133.9
C 0 10 31504 230.92 572 576 133.9
D 2 250 215178 1573.79 567 551 136.4
D 12 6 138072 1008.4 567 551 136.4
D 2 153 137409 1003.54 567 551 136.4

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