ASTROSAT CZTI

Data Quality Report

Orbit 33793

Creation date: 2024-06-27T20:52:43.398628
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_086T01_9000004820_33793cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33793cztM0_level2_quad_clean.evt
Size (bytes)1,298,145,600128,085,120
Size1.2 GB 122.2 MB
Events in quadrant A8,622,708802,745
Events in quadrant B6,562,027825,339
Events in quadrant C6,047,329831,128
Events in quadrant D17,355,422670,532

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0327874
B0265373
C0246683
D0589623

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10809115410.676288%
B108093533.265797%
C10809950.878897%
D10809449041.539458%

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 13587 10811 849 849 6.25% 7.85%
B 13587 10811 225 225 1.66% 2.08%
C 13587 10811 79 79 0.58% 0.73%
D 13587 10811 4400 4400 32.38% 40.70%

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 15 237 3654450 15409.07 1192 1168 237.1
A 15 169 291044 1222.66 1192 1168 237.1
A 7 16 34309 139.78 1192 1168 237.1
B 5 172 1009543 4243.31 1243 1210 237.6
B 5 255 191915 802.53 1243 1210 237.6
B 4 251 175850 734.93 1243 1210 237.6
C 15 214 491396 1742.46 1224 1234 281.3
C 3 233 196997 695.91 1224 1234 281.3
C 14 254 196254 693.27 1224 1234 281.3
D 12 235 8958211 36147.7 1004 973 247.8
D 8 195 1707555 6887.06 1004 973 247.8
D 10 118 835014 3365.84 1004 973 247.8

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