ASTROSAT CZTI

Data Quality Report

Orbit 20210210_C05_019T04_9000004162_level2

Creation date: 2025-12-20T07:44:04.831716
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/AS1C05_019T04_9000004162cztM0_level2.fits modeM0/AS1C05_019T04_9000004162cztM0_level2_quad_clean.evt
Size (bytes)994,985,2801,107,057,600
Size948.9 MB 1.0 GB
Events in quadrant A6,114,0826,897,135
Events in quadrant B5,850,1186,948,919
Events in quadrant C6,022,6566,695,051
Events in quadrant D5,155,8705,999,665

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020780
B020780
C020780
D020780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01310
C01310
D01310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02119870
B02186570
C02157640
D02938440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10198110831.061963%
B10198116731.640502%
C10198118991.862112%
D10198151965.095067%

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 114900 101962 0 0 0.00% 0.00%
B 114900 101961 0 0 0.00% 0.00%
C 114900 101950 0 0 0.00% 0.00%
D 114900 101862 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 6022 11.63 1592 1499 389.0
A 7 110 4845 8.6 1592 1499 389.0
A 0 30 4734 8.32 1592 1499 389.0
B 2 9 4907 11.4 1549 1482 300.4
B 2 8 3907 8.07 1549 1482 300.4
B 5 128 3882 7.99 1549 1482 300.4
C 12 241 4221 6.84 1592 1495 398.7
C 3 187 4027 6.35 1592 1495 398.7
C 2 191 3992 6.26 1592 1495 398.7
D 15 46 3988 6.78 1472 1346 389.5
D 4 246 3866 6.47 1472 1346 389.5
D 10 189 3727 6.11 1472 1346 389.5

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