ASTROSAT CZTI

Data Quality Report

Orbit 20190326_A06_003T07_9000002818_level2

Creation date: 2025-11-28T23:35:44.913212
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/AS1A06_003T07_9000002818cztM0_level2.fits modeM0/AS1A06_003T07_9000002818cztM0_level2_quad_clean.evt
Size (bytes)1,050,978,2401,087,214,400
Size1002.3 MB 1.0 GB
Events in quadrant A6,482,0386,750,382
Events in quadrant B5,888,0166,131,063
Events in quadrant C6,335,1186,524,950
Events in quadrant D5,481,7845,885,754

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022700
B022700
C022700
D022700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02595560
B03171480
C02319470
D02884810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11138234113.062434%
B1113821228511.029610%
C11138219901.786644%
D11138244453.990771%

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 126331 111382 0 0 0.00% 0.00%
B 126331 110564 0 0 0.00% 0.00%
C 126331 111383 0 0 0.00% 0.00%
D 126331 111348 0 0 0.00% 0.00%

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 0 29 5429 9.37 1689 1588 409.8
A 7 110 5230 8.89 1689 1588 409.8
A 9 19 4813 7.87 1689 1588 409.8
B 2 9 4860 11.24 1559 1491 299.8
B 2 8 4123 8.78 1559 1491 299.8
B 14 254 3918 8.1 1559 1491 299.8
C 12 241 4351 6.49 1676 1562 429.8
C 3 126 4224 6.19 1676 1562 429.8
C 2 191 4178 6.09 1676 1562 429.8
D 10 190 4126 6.52 1566 1425 414.0
D 3 14 3945 6.09 1566 1425 414.0
D 10 189 3858 5.88 1566 1425 414.0

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