ASTROSAT CZTI

Data Quality Report

Orbit 38992

Creation date: 2024-06-27T21:59:03.742090
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/AS1A12_095T02_9000005420_38992cztM0_level2.fits modeM0/AS1A12_095T02_9000005420_38992cztM0_level2_quad_clean.evt
Size (bytes)559,987,200129,597,120
Size534.0 MB 123.6 MB
Events in quadrant A4,974,248857,969
Events in quadrant B3,600,194903,011
Events in quadrant C3,691,254859,571
Events in quadrant D7,850,793754,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197384
B0160242
C0158762
D0288716

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78953103.926536%
B7895120.151995%
C789550.063331%
D78936237.893070%

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 38600 7898 283 283 0.73% 3.58%
B 38600 7898 0 0 0.00% 0.00%
C 38600 7898 0 0 0.00% 0.00%
D 38600 7897 619 619 1.60% 7.84%

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 13 248 1015709 5832.83 862 845 174.0
A 10 83 580669 3332.48 862 845 174.0
A 6 10 29836 166.62 862 845 174.0
B 5 172 78734 457.65 875 851 170.2
B 0 230 54310 314.13 875 851 170.2
B 12 111 21554 121.65 875 851 170.2
C 15 214 329306 1648.75 856 862 199.2
C 15 208 10462 48.19 856 862 199.2
C 14 67 8212 36.9 856 862 199.2
D 12 235 2431264 12081.78 834 808 201.2
D 2 153 1523904 7571.3 834 808 201.2
D 2 249 337372 1673.05 834 808 201.2

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