ASTROSAT CZTI

Data Quality Report

Orbit 38144

Creation date: 2024-06-27T21:48:56.736354
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/AS1C07_001T12_9000005366_38144cztM0_level2.fits modeM0/AS1C07_001T12_9000005366_38144cztM0_level2_quad_clean.evt
Size (bytes)538,240,320172,834,560
Size513.3 MB 164.8 MB
Events in quadrant A4,977,2731,170,130
Events in quadrant B4,609,2041,206,429
Events in quadrant C4,582,1821,160,849
Events in quadrant D5,029,2481,048,035

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205574
B0197893
C0192803
D0214543

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9350310.331551%
B9350600.641711%
C9350170.181818%
D93501231.315508%

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 13567 9352 19 19 0.14% 0.20%
B 13567 9352 39 39 0.29% 0.42%
C 13567 9352 8 8 0.06% 0.09%
D 13567 9352 105 105 0.77% 1.12%

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 592984 2784.14 1071 1053 212.6
A 12 16 141695 661.51 1071 1053 212.6
A 9 143 54365 250.75 1071 1053 212.6
B 4 171 188321 947.14 1073 1049 197.7
B 5 172 106540 533.53 1073 1049 197.7
B 0 229 50097 248.06 1073 1049 197.7
C 15 214 388477 1616.26 1048 1059 239.7
C 0 10 39654 161.01 1048 1059 239.7
C 3 233 28377 113.97 1048 1059 239.7
D 13 249 468449 1907.92 1027 1001 245.0
D 1 52 229197 931.4 1027 1001 245.0
D 7 55 145406 589.4 1027 1001 245.0

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