ASTROSAT CZTI

Data Quality Report

Orbit 12745

Creation date: 2024-06-27T16:31:50.986746
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/AS1G08_021T01_9000001880_12745cztM0_level2.evt modeM0/AS1G08_021T01_9000001880_12745cztM0_level2_quad_clean.evt
Size (bytes)906,949,440189,256,320
Size864.9 MB 180.5 MB
Events in quadrant A6,197,4271,224,281
Events in quadrant B7,942,6511,218,497
Events in quadrant C5,768,6721,213,987
Events in quadrant D6,670,7441,169,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272634
B0321763
C0265433
D0290613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131001651.259542%
B131007385.633588%
C131001240.946565%
D131002001.526718%

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 14841 13104 21 21 0.14% 0.16%
B 14841 13104 402 402 2.71% 3.07%
C 14841 13104 0 0 0.00% 0.00%
D 14841 13104 79 79 0.53% 0.60%

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 8 15 118292 384.03 1507 1474 304.2
A 15 222 91918 297.33 1507 1474 304.2
A 12 189 81709 263.77 1507 1474 304.2
B 4 239 1882815 6673.51 1484 1443 281.9
B 0 214 89475 312.26 1484 1443 281.9
B 3 209 48565 167.15 1484 1443 281.9
C 8 128 12758 33.22 1473 1478 339.6
C 13 61 10513 26.61 1473 1478 339.6
C 8 112 6932 16.06 1473 1478 339.6
D 1 52 806201 2120.02 1444 1414 379.6
D 2 136 144465 376.83 1444 1414 379.6
D 10 199 111002 288.68 1444 1414 379.6

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