ASTROSAT CZTI

Data Quality Report

Orbit 36240

Creation date: 2022-06-13T12:47:23.661898
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/AS1A10_071T34_9000005178_36240cztM0_level2.evt modeM0/AS1A10_071T34_9000005178_36240cztM0_level2_quad_clean.evt
Size (bytes)852,577,920153,763,200
Size813.1 MB 146.6 MB
Events in quadrant A5,248,604999,252
Events in quadrant B6,071,6801,005,494
Events in quadrant C5,674,057989,131
Events in quadrant D8,099,997919,656

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223784
B0248503
C0231203
D0311413

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10739410.381786%
B107392362.197598%
C10739760.707701%
D107396596.136512%

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 13545 10741 22 22 0.16% 0.20%
B 13545 10741 146 146 1.08% 1.36%
C 13545 10741 50 50 0.37% 0.47%
D 13545 10741 551 551 4.07% 5.13%

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 311359 1218.63 1252 1226 254.5
A 9 143 85098 329.57 1252 1226 254.5
A 13 254 18990 69.8 1252 1226 254.5
B 5 172 897992 3736.52 1236 1203 240.0
B 5 255 80130 328.85 1236 1203 240.0
B 0 245 59452 242.7 1236 1203 240.0
C 15 214 444568 1547.58 1219 1227 286.5
C 0 10 345517 1201.82 1219 1227 286.5
C 0 207 131227 453.79 1219 1227 286.5
D 12 6 1000164 3424.45 1193 1163 291.7
D 12 235 432556 1478.76 1193 1163 291.7
D 2 250 428152 1463.66 1193 1163 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