ASTROSAT CZTI

Data Quality Report

Orbit 42097

Creation date: 2024-06-27T22:36:55.030427
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_099T03_9000005746_42097cztM0_level2.fits modeM0/AS1A12_099T03_9000005746_42097cztM0_level2_quad_clean.evt
Size (bytes)268,698,24072,308,160
Size256.3 MB 69.0 MB
Events in quadrant A3,681,189489,938
Events in quadrant B1,832,460509,909
Events in quadrant C2,020,810475,336
Events in quadrant D2,098,369431,491

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136811
B080801
C083211
D090101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A40161082.689243%
B401640.099602%
C401630.074701%
D4016551.369522%

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 4016 4016 94 94 2.34% 2.34%
B 4016 4016 1 1 0.02% 0.02%
C 4016 4016 0 0 0.00% 0.00%
D 4016 4016 47 47 1.17% 1.17%

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 15 222 1549817 16463.57 461 451 94.1
A 10 83 332910 3532.71 461 451 94.1
A 15 223 8774 88.44 461 451 94.1
B 5 255 11917 130.2 462 449 88.1
B 12 111 11072 120.6 462 449 88.1
B 11 111 10282 111.63 462 449 88.1
C 15 214 164957 1561.67 456 460 105.3
C 15 159 45352 426.19 456 460 105.3
C 8 79 24608 229.25 456 460 105.3
D 12 6 202066 1861.09 449 437 108.3
D 13 249 109821 1009.64 449 437 108.3
D 1 52 40222 367.23 449 437 108.3

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