ASTROSAT CZTI

Data Quality Report

Orbit 20200705_A07_068T01_9000003756_level2

Creation date: 2025-12-13T13:23:30.441797
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/AS1A07_068T01_9000003756cztM0_level2.fits modeM0/AS1A07_068T01_9000003756cztM0_level2_quad_clean.evt
Size (bytes)6,040,742,4005,002,657,920
Size5.6 GB 4.7 GB
Events in quadrant A37,100,43228,293,780
Events in quadrant B36,396,76029,379,112
Events in quadrant C35,799,16226,714,340
Events in quadrant D31,546,06825,044,788

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016593570
B013169610
C014637480
D016628280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125020
B0125020
C0125020
D0125040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010440
B010440
C010440
D010440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A614400412456.713053%
B61441689181.451460%
C614410296834.831139%
D614410318225.179278%

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 737957 614277 0 0 0.00% 0.00%
B 737957 614318 0 0 0.00% 0.00%
C 737957 614230 0 0 0.00% 0.00%
D 737957 613746 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 31108 9.4 9678 9107 2341.7
A 7 110 29373 8.65 9678 9107 2341.7
A 9 19 27616 7.9 9678 9107 2341.7
B 2 9 29198 10.79 9622 9206 1853.5
B 2 8 24274 8.13 9622 9206 1853.5
B 5 128 23723 7.83 9622 9206 1853.5
C 12 241 24822 6.7 9469 8835 2387.0
C 9 209 24273 6.47 9469 8835 2387.0
C 3 126 23993 6.35 9469 8835 2387.0
D 6 231 22168 5.89 9019 8212 2370.4
D 7 3 22166 5.89 9019 8212 2370.4
D 6 67 22044 5.84 9019 8212 2370.4

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