ASTROSAT CZTI

Data Quality Report

Orbit 34996

Creation date: 2022-03-23T14:33:16.641182
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_123T11_9000005014_34996cztM0_level2.evt modeM0/AS1A10_123T11_9000005014_34996cztM0_level2_quad_clean.evt
Size (bytes)1,252,978,560132,759,360
Size1.2 GB 126.6 MB
Events in quadrant A15,060,448670,384
Events in quadrant B6,282,391838,860
Events in quadrant C6,734,630832,456
Events in quadrant D8,995,461782,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0535043
B0270063
C0276553
D0357203

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12949363028.033053%
B12949730.563750%
C12949630.486524%
D129492862.208665%

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 15634 12951 3036 3036 19.42% 23.44%
B 15634 12951 35 35 0.22% 0.27%
C 15634 12951 49 49 0.31% 0.38%
D 15634 12951 241 241 1.54% 1.86%

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 15 169 9522919 35654.96 1338 1311 267.0
A 15 223 173627 645.26 1338 1311 267.0
A 10 83 90262 333.09 1338 1311 267.0
B 5 172 129662 444.09 1494 1453 288.7
B 4 232 116958 400.08 1494 1453 288.7
B 12 111 36344 120.85 1494 1453 288.7
C 15 214 531449 1565.58 1459 1468 338.5
C 15 159 310552 913.04 1459 1468 338.5
C 0 10 153431 448.9 1459 1468 338.5
D 8 195 1947527 5470.65 1456 1414 355.7
D 13 249 713672 2002.2 1456 1414 355.7
D 2 250 161221 449.23 1456 1414 355.7

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