ASTROSAT CZTI

Data Quality Report

Orbit 39722

Creation date: 2024-06-27T22:08:12.914290
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_022T01_9000005494_39722cztM0_level2.fits modeM0/AS1A12_022T01_9000005494_39722cztM0_level2_quad_clean.evt
Size (bytes)365,736,96099,702,720
Size348.8 MB 95.1 MB
Events in quadrant A3,426,032688,458
Events in quadrant B2,781,050709,371
Events in quadrant C3,000,613666,337
Events in quadrant D3,929,071593,672

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134933
B0114122
C0122532
D0150752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51621232.382797%
B5162480.929872%
C5162120.232468%
D51623186.160403%

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 7286 5163 81 81 1.11% 1.57%
B 7286 5163 27 27 0.37% 0.52%
C 7286 5163 6 6 0.08% 0.12%
D 7286 5163 266 266 3.65% 5.15%

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 460471 3647.99 633 622 126.1
A 13 248 361951 2866.43 633 622 126.1
A 9 143 82032 645.83 633 622 126.1
B 5 172 214222 1792.13 630 614 119.2
B 4 170 42246 349.28 630 614 119.2
B 5 255 24311 198.81 630 614 119.2
C 15 214 214588 1493.64 621 625 143.2
C 15 208 195589 1361.01 621 625 143.2
C 9 187 87639 607.43 621 625 143.2
D 12 227 1060665 7102.39 608 592 149.3
D 2 250 199339 1331.59 608 592 149.3
D 13 249 139899 933.34 608 592 149.3

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