ASTROSAT CZTI

Data Quality Report

Orbit 37264

Creation date: 2024-06-27T21:37:36.138551
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/AS1T04_087T01_9000005292_37264cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37264cztM0_level2_quad_clean.evt
Size (bytes)481,711,68068,313,600
Size459.4 MB 65.1 MB
Events in quadrant A4,543,021418,719
Events in quadrant B3,409,647434,995
Events in quadrant C2,973,030419,801
Events in quadrant D3,282,841402,700

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171863
B0138342
C0122022
D0135982

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55992995.340239%
B55991372.446866%
C5599741.321665%
D55991883.357742%

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 7091 5600 335 335 4.72% 5.98%
B 7091 5600 67 67 0.94% 1.20%
C 7091 5600 54 54 0.76% 0.96%
D 7091 5600 151 151 2.13% 2.70%

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 15 223 1544263 11942.86 634 622 129.3
A 10 83 280417 2164.72 634 622 129.3
A 15 237 178440 1375.74 634 622 129.3
B 5 172 298962 2433.31 632 615 122.6
B 0 213 281881 2294.0 632 615 122.6
B 0 190 125397 1017.72 632 615 122.6
C 15 214 237803 1610.9 617 621 147.2
C 14 254 189351 1281.83 617 621 147.2
C 0 10 101964 688.31 617 621 147.2
D 13 249 518594 3409.73 614 597 151.9
D 2 153 133313 873.61 614 597 151.9
D 2 249 96941 634.19 614 597 151.9

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