ASTROSAT CZTI

Data Quality Report

Orbit 22531

Creation date: 2024-06-27T18:42:23.877663
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/AS1A08_003T01_9000003342_22531cztM0_level2.evt modeM0/AS1A08_003T01_9000003342_22531cztM0_level2_quad_clean.evt
Size (bytes)717,854,400123,315,840
Size684.6 MB 117.6 MB
Events in quadrant A4,893,846753,432
Events in quadrant B5,646,260771,317
Events in quadrant C5,037,452742,916
Events in quadrant D5,437,352725,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216871
B0239941
C0219681
D0235481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10700280.261682%
B107011581.476498%
C107011030.962527%
D107011241.158770%

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 11230 10700 0 0 0.00% 0.00%
B 11231 10701 35 35 0.31% 0.33%
C 11231 10701 15 15 0.13% 0.14%
D 11231 10701 85 85 0.76% 0.79%

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 17337 62.84 1268 1238 256.2
A 3 137 11165 38.75 1268 1238 256.2
A 0 226 11038 38.25 1268 1238 256.2
B 15 33 653111 2698.01 1261 1230 241.6
B 12 111 29715 117.89 1261 1230 241.6
B 11 111 26305 103.78 1261 1230 241.6
C 14 238 193298 669.92 1221 1228 286.7
C 10 22 63165 216.03 1221 1228 286.7
C 2 16 19097 62.32 1221 1228 286.7
D 1 52 398675 1316.44 1233 1198 301.9
D 12 227 171737 564.83 1233 1198 301.9
D 13 172 122591 402.05 1233 1198 301.9

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