ASTROSAT CZTI

Data Quality Report

Orbit 20220614_A10_071T33_9000005186_level2

Creation date: 2022-06-16T12:36:00.733988
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_071T33_9000005186cztM0_level2_bc.evt modeM0/AS1A10_071T33_9000005186cztM0_level2_quad_clean.evt
Size (bytes)2,760,727,680648,768,960
Size2.6 GB 618.7 MB
Events in quadrant A13,515,0144,159,689
Events in quadrant B21,453,1554,054,884
Events in quadrant C15,010,0954,091,322
Events in quadrant D29,901,4473,581,860

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01163350
B01545620
C01186190
D01843680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011240
B011240
C011240
D011240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547872800.511070%
B5478733086.037929%
C547874790.874295%
D54787706312.891744%

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 75763 54799 61 61 0.08% 0.11%
B 75763 54783 230 230 0.30% 0.42%
C 75763 54787 46 46 0.06% 0.08%
D 75763 54772 2525 2525 3.33% 4.61%

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 10 83 1390097 2240.91 2813 2763 619.1
A 15 223 704236 1133.06 2813 2763 619.1
A 9 143 330126 528.78 2813 2763 619.1
B 5 172 3310817 6039.92 2774 2714 547.7
B 5 236 2297068 4189.02 2774 2714 547.7
B 4 171 1813817 3306.71 2774 2714 547.7
C 15 214 2161690 3431.3 2755 2728 629.2
C 0 10 1196989 1898.07 2755 2728 629.2
C 0 207 707540 1120.18 2755 2728 629.2
D 12 227 6098160 9836.51 2582 2501 619.7
D 12 6 5711640 9212.78 2582 2501 619.7
D 7 223 3840857 6193.92 2582 2501 619.7

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