ASTROSAT CZTI

Data Quality Report

Orbit 20201129_A10_065T03_9000004040_level2

Creation date: 2025-12-17T23:24:43.921900
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_065T03_9000004040cztM0_level2.fits modeM0/AS1A10_065T03_9000004040cztM0_level2_quad_clean.evt
Size (bytes)1,606,455,3601,256,253,120
Size1.5 GB 1.2 GB
Events in quadrant A10,107,6667,350,300
Events in quadrant B9,717,3927,182,515
Events in quadrant C9,769,9886,642,780
Events in quadrant D8,460,0006,271,530

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031540
B031560
C031540
D031540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02390
B02390
C02390
D02390

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03321220
B03339430
C03456690
D04430720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15463223011.488049%
B15463125161.627099%
C15463237942.453567%
D15463170924.586402%

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 178961 154630 0 0 0.00% 0.00%
B 178962 154622 0 0 0.00% 0.00%
C 178962 154626 0 0 0.00% 0.00%
D 178962 154326 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 8088 8.88 2633 2480 631.4
A 7 110 8046 8.81 2633 2480 631.4
A 9 19 7549 8.03 2633 2480 631.4
B 2 9 7549 10.18 2567 2449 500.8
B 5 128 6350 7.79 2567 2449 500.8
B 2 8 6266 7.62 2567 2449 500.8
C 1 81 7353 7.61 2582 2425 647.2
C 1 80 7342 7.6 2582 2425 647.2
C 9 209 6781 6.73 2582 2425 647.2
D 7 3 5949 5.91 2417 2205 633.1
D 6 67 5821 5.71 2417 2205 633.1
D 6 231 5810 5.69 2417 2205 633.1

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