ASTROSAT CZTI

Data Quality Report

Orbit 53745

Creation date: 2025-09-04T09:34:27.620031
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/AS1A14_022T04_9000006506_53745cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53745cztM0_level2_quad_clean.evt
Size (bytes)979,781,76071,599,680
Size934.4 MB 68.3 MB
Events in quadrant A16,141,43684,615
Events in quadrant B3,133,522685,831
Events in quadrant C7,832,806502,927
Events in quadrant D8,653,546436,727

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0524792
B0141362
C0278523
D0302782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6560588289.664634%
B65601021.554878%
C6559144922.091782%
D6559179327.336484%

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 7674 6559 5734 5734 74.72% 87.42%
B 7675 6560 20 20 0.26% 0.30%
C 7674 6560 1202 1202 15.66% 18.32%
D 7673 6559 1646 1646 21.45% 25.10%

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 3 63 14189199 149685.93 379 370 94.8
A 0 8 197817 2082.98 379 370 94.8
A 8 249 143753 1512.63 379 370 94.8
B 5 185 123672 810.77 705 680 151.7
B 4 81 69795 455.61 705 680 151.7
B 4 171 26071 167.38 705 680 151.7
C 15 224 4215111 24603.78 621 618 171.3
C 15 147 345519 2013.5 621 618 171.3
C 13 3 197404 1148.82 621 618 171.3
D 1 241 2879124 17269.5 581 555 166.7
D 2 172 1861078 11161.9 581 555 166.7
D 2 120 588188 3525.41 581 555 166.7

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