ASTROSAT CZTI

Data Quality Report

Orbit 35516

Creation date: 2022-04-23T22:05:24.183074
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/AS1A11_097T07_9000005084_35516cztM0_level2.evt modeM0/AS1A11_097T07_9000005084_35516cztM0_level2_quad_clean.evt
Size (bytes)794,352,960155,462,400
Size757.6 MB 148.3 MB
Events in quadrant A5,110,7321,009,542
Events in quadrant B5,931,3751,011,715
Events in quadrant C5,819,215998,080
Events in quadrant D6,463,597940,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222254
B0246263
C0236763
D0260603

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10809150.138773%
B108092051.896568%
C108091050.971413%
D108093152.914238%

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 14956 10812 2 2 0.01% 0.02%
B 14956 10812 130 130 0.87% 1.20%
C 14956 10812 56 56 0.37% 0.52%
D 14956 10812 247 247 1.65% 2.28%

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 234390 927.02 1246 1221 251.5
A 9 143 43879 169.6 1246 1221 251.5
A 13 254 16973 62.63 1246 1221 251.5
B 5 172 501260 2099.17 1225 1192 238.2
B 5 236 373857 1564.36 1225 1192 238.2
B 5 200 205291 856.76 1225 1192 238.2
C 15 214 449328 1590.73 1211 1219 281.7
C 0 10 413599 1463.9 1211 1219 281.7
C 14 67 126939 446.29 1211 1219 281.7
D 10 118 479205 1638.85 1202 1172 291.7
D 13 249 382084 1305.89 1202 1172 291.7
D 8 195 371319 1268.98 1202 1172 291.7

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