ASTROSAT CZTI

Data Quality Report

Orbit 41027

Creation date: 2024-06-27T22:23:26.539458
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_029T02_9000005590_41027cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41027cztM0_level2_quad_clean.evt
Size (bytes)292,072,32086,034,240
Size278.5 MB 82.0 MB
Events in quadrant A2,680,239581,214
Events in quadrant B2,414,585597,146
Events in quadrant C2,679,538566,132
Events in quadrant D2,655,731517,835

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110083
B0102422
C0109082
D0113542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4889180.368173%
B4889150.306811%
C4889841.718143%
D48891322.699939%

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 7012 4890 4 4 0.06% 0.08%
B 7012 4890 3 3 0.04% 0.06%
C 7012 4890 81 81 1.16% 1.66%
D 7012 4890 114 114 1.63% 2.33%

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 477505 4196.45 553 543 113.7
A 13 248 32425 280.51 553 543 113.7
A 12 189 12973 109.36 553 543 113.7
B 0 245 100941 937.62 553 539 107.1
B 15 32 75109 696.39 553 539 107.1
B 0 229 41202 379.74 553 539 107.1
C 15 214 211872 1669.57 545 550 126.6
C 0 10 203857 1606.25 545 550 126.6
C 14 254 65764 515.23 545 550 126.6
D 13 249 304568 2316.02 540 523 131.3
D 2 249 116069 880.16 540 523 131.3
D 9 19 83409 631.37 540 523 131.3

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