ASTROSAT CZTI

Data Quality Report

Orbit 20201223_A10_116T01_9000004082_level2

Creation date: 2025-12-18T20:36:18.861610
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_116T01_9000004082cztM0_level2.fits modeM0/AS1A10_116T01_9000004082cztM0_level2_quad_clean.evt
Size (bytes)1,635,693,1201,256,068,800
Size1.5 GB 1.2 GB
Events in quadrant A10,130,4107,078,110
Events in quadrant B9,766,6387,079,352
Events in quadrant C9,909,1306,698,796
Events in quadrant D8,426,1625,879,917

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033580
B033580
C033580
D033580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02670
B02670
C02670
D02670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03510490
B03678670
C03587270
D04933560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16495725121.522821%
B16495741802.533994%
C16495734192.072661%
D16495799026.002776%

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 191572 164947 0 0 0.00% 0.00%
B 191572 164937 0 0 0.00% 0.00%
C 191572 164949 0 0 0.00% 0.00%
D 191572 164793 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 9601 11.1 2637 2477 641.5
A 7 110 8104 8.77 2637 2477 641.5
A 0 30 7595 7.98 2637 2477 641.5
B 2 9 7810 10.58 2580 2463 505.4
B 2 8 6537 8.06 2580 2463 505.4
B 3 17 6402 7.79 2580 2463 505.4
C 12 241 6954 6.83 2617 2447 659.8
C 9 209 6648 6.37 2617 2447 659.8
C 3 126 6637 6.35 2617 2447 659.8
D 7 3 5955 5.95 2404 2192 632.8
D 6 231 5907 5.87 2404 2192 632.8
D 6 67 5842 5.77 2404 2192 632.8

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