ASTROSAT CZTI

Data Quality Report

Orbit 19360

Creation date: 2024-06-27T18:01:49.182208
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/AS1A05_204T01_9000002856_19360cztM0_level2.evt modeM0/AS1A05_204T01_9000002856_19360cztM0_level2_quad_clean.evt
Size (bytes)1,071,616,320157,988,160
Size1022.0 MB 150.7 MB
Events in quadrant A6,163,090999,720
Events in quadrant B6,405,0121,003,111
Events in quadrant C6,257,880963,131
Events in quadrant D12,724,585894,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272023
B0277633
C0273123
D0472733

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13382850.635182%
B133821481.105963%
C133811411.053733%
D1338211688.728142%

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 14947 13383 2 2 0.01% 0.01%
B 14947 13383 9 9 0.06% 0.07%
C 14946 13382 0 0 0.00% 0.00%
D 14947 13384 917 917 6.14% 6.85%

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 13 254 15492 43.34 1595 1561 321.4
A 0 226 13907 38.41 1595 1561 321.4
A 3 137 12995 35.57 1595 1561 321.4
B 0 230 45396 144.7 1589 1547 303.0
B 0 190 42626 135.56 1589 1547 303.0
B 12 111 38147 120.78 1589 1547 303.0
C 14 238 234054 645.87 1534 1543 360.0
C 3 233 37733 100.53 1534 1543 360.0
C 13 61 10758 25.6 1534 1543 360.0
D 10 66 3130684 8452.8 1509 1462 370.2
D 7 238 2430210 6560.64 1509 1462 370.2
D 12 233 709168 1911.69 1509 1462 370.2

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