ASTROSAT CZTI

Data Quality Report

Orbit 10131

Creation date: 2024-06-27T15:55:22.556321
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/AS1A03_079T02_9000001458_10131cztM0_level2.evt modeM0/AS1A03_079T02_9000001458_10131cztM0_level2_quad_clean.evt
Size (bytes)182,617,92024,338,880
Size174.2 MB 23.2 MB
Events in quadrant A1,234,548148,412
Events in quadrant B1,331,891146,971
Events in quadrant C1,165,160140,255
Events in quadrant D1,638,383133,003

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524
B0524
C0522
D0526

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05497368
B05944459
C05252388
D07106601

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2338210.898204%
B2324271.161790%
C2327110.472712%
D2298693.002611%

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 2501 2474 3 3 0.12% 0.12%
B 2502 2484 5 5 0.20% 0.20%
C 2502 2482 0 0 0.00% 0.00%
D 2502 2471 52 52 2.08% 2.10%

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 15 174 15296 232.94 313 308 64.3
A 13 248 6451 95.47 313 308 64.3
A 8 5 5232 76.53 313 308 64.3
B 0 214 63788 1097.69 307 301 57.8
B 0 219 31597 541.11 307 301 57.8
B 4 81 13565 229.33 307 301 57.8
C 13 61 2280 28.86 298 300 68.6
C 14 234 1549 18.21 298 300 68.6
C 8 222 1257 13.95 298 300 68.6
D 8 195 175204 2477.27 294 287 70.6
D 4 95 156837 2217.15 294 287 70.6
D 7 71 87756 1238.78 294 287 70.6

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