ASTROSAT CZTI

Data Quality Report

Orbit 39303

Creation date: 2024-06-27T22:02:57.503584
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_044T04_9000005464_39303cztM0_level2.fits modeM0/AS1A12_044T04_9000005464_39303cztM0_level2_quad_clean.evt
Size (bytes)535,046,40077,457,600
Size510.3 MB 73.9 MB
Events in quadrant A2,853,491622,131
Events in quadrant B3,209,625614,334
Events in quadrant C2,998,460611,132
Events in quadrant D10,362,872154,429

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113313
B0124882
C0117382
D0341282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4897400.816827%
B48972875.860731%
C4897581.184399%
D4897369475.433939%

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 7049 4898 22 22 0.31% 0.45%
B 7049 4898 210 210 2.98% 4.29%
C 7049 4898 54 54 0.77% 1.10%
D 7049 4898 3099 3099 43.96% 63.27%

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 433402 3637.9 589 577 119.0
A 13 248 122980 1028.8 589 577 119.0
A 10 255 8994 70.74 589 577 119.0
B 5 172 787654 7259.78 572 557 108.4
B 0 229 108540 995.98 572 557 108.4
B 5 255 18205 162.78 572 557 108.4
C 14 254 504001 3815.39 570 574 131.9
C 15 214 212069 1602.88 570 574 131.9
C 6 255 24949 184.73 570 574 131.9
D 12 235 8749948 116330.46 308 300 75.2
D 12 233 152305 2020.97 308 300 75.2
D 5 222 59895 792.34 308 300 75.2

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