ASTROSAT CZTI

Data Quality Report

Orbit 34792

Creation date: 2022-03-05T23:27:19.783496
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/AS1C07_004T01_9000004990_34792cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34792cztM0_level2_quad_clean.evt
Size (bytes)876,251,520139,464,000
Size835.7 MB 133.0 MB
Events in quadrant A5,220,907884,430
Events in quadrant B6,888,300870,832
Events in quadrant C5,599,560890,999
Events in quadrant D8,105,146835,748

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221453
B0273662
C0232452
D0315652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10709130.121393%
B107095264.911756%
C10709830.775049%
D107092282.129050%

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 13515 10711 0 0 0.00% 0.00%
B 13515 10711 370 370 2.74% 3.45%
C 13515 10711 57 57 0.42% 0.53%
D 13515 10711 192 192 1.42% 1.79%

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 15 169 269111 1065.46 1243 1217 251.4
A 10 83 80950 317.11 1243 1217 251.4
A 15 174 27972 106.41 1243 1217 251.4
B 5 172 1243197 5319.09 1220 1188 233.5
B 15 85 302971 1292.43 1220 1188 233.5
B 5 255 217570 926.69 1220 1188 233.5
C 15 214 450184 1590.27 1208 1215 282.3
C 0 10 200566 706.11 1208 1215 282.3
C 14 67 158693 557.8 1208 1215 282.3
D 8 195 1909779 6562.37 1199 1168 290.8
D 2 250 442365 1516.96 1199 1168 290.8
D 2 249 394283 1351.64 1199 1168 290.8

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