ASTROSAT CZTI

Data Quality Report

Orbit 42345

Creation date: 2024-06-27T22:39:15.706258
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_102T01_9000005798_42345cztM0_level2.fits modeM0/AS1A12_102T01_9000005798_42345cztM0_level2_quad_clean.evt
Size (bytes)310,605,12088,539,840
Size296.2 MB 84.4 MB
Events in quadrant A2,747,615605,987
Events in quadrant B2,301,555611,494
Events in quadrant C2,373,091591,184
Events in quadrant D3,687,667523,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113053
B0102132
C0100612
D0144322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4971150.301750%
B4971150.301750%
C497130.060350%
D49713246.517803%

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 7095 4972 4 4 0.06% 0.08%
B 7095 4972 6 6 0.08% 0.12%
C 7095 4972 0 0 0.00% 0.00%
D 7095 4972 281 281 3.96% 5.65%

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 559588 4929.65 557 547 113.4
A 13 248 15780 134.33 557 547 113.4
A 13 6 12662 106.83 557 547 113.4
B 0 230 34790 326.17 552 539 105.0
B 5 172 32011 299.7 552 539 105.0
B 15 85 21709 201.6 552 539 105.0
C 15 214 208528 1634.69 550 553 127.2
C 7 247 6467 46.48 550 553 127.2
C 15 111 4213 28.77 550 553 127.2
D 12 233 670328 5154.99 537 523 129.9
D 12 6 507114 3898.86 537 523 129.9
D 1 52 168136 1289.99 537 523 129.9

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