ASTROSAT CZTI

Data Quality Report

Orbit 00718

Creation date: 2024-06-27T14:02:00.460335
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/AS1P01_147T01_9000000106_00718cztM0_level2.evt modeM0/AS1P01_147T01_9000000106_00718cztM0_level2_quad_clean.evt
Size (bytes)205,355,52012,692,160
Size195.8 MB 12.1 MB
Events in quadrant A1,485,14972,925
Events in quadrant B1,550,04771,226
Events in quadrant C1,478,27969,526
Events in quadrant D1,611,22167,230

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B011
C111
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388
B04111
C03810
D03812

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076162231
B078682289
C075772202
D080082242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A137300.000000%
B137600.000000%
C136400.000000%
D1377191.379811%

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 6376 1431 13 13 0.20% 0.91%
B 6375 1441 14 14 0.22% 0.97%
C 6377 1433 8 8 0.13% 0.56%
D 6372 1439 81 81 1.27% 5.63%

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 17 44828 488.88 373 376 90.9
A 15 171 3510 34.47 373 376 90.9
A 13 164 2215 20.23 373 376 90.9
B 0 220 10841 110.85 400 402 94.2
B 0 23 8026 80.96 400 402 94.2
B 14 50 4974 48.55 400 402 94.2
C 15 241 26803 254.4 367 382 103.9
C 3 111 6673 60.57 367 382 103.9
C 3 79 4826 42.79 367 382 103.9
D 9 52 134771 1237.68 351 361 108.6
D 6 226 93945 861.74 351 361 108.6
D 1 4 51666 472.43 351 361 108.6

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