ASTROSAT CZTI

Data Quality Report

Orbit 20200829_A09_145T01_9000003848_level2

Creation date: 2025-12-14T18:42:53.846226
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/AS1A09_145T01_9000003848cztM0_level2.fits modeM0/AS1A09_145T01_9000003848cztM0_level2_quad_clean.evt
Size (bytes)5,220,218,8804,243,296,960
Size4.9 GB 4.0 GB
Events in quadrant A29,890,82025,158,802
Events in quadrant B27,923,66724,410,629
Events in quadrant C28,682,02923,788,483
Events in quadrant D39,452,41823,030,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010330100
B011523570
C010409290
D016000930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07540
B07540
C07510
D07510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095660
B095710
C096400
D095890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46930762871.339635%
B468925178063.797196%
C469202100822.148755%
D4683266202713.244407%

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 620159 471764 0 0 0.00% 0.00%
B 620159 470537 0 0 0.00% 0.00%
C 620159 471566 0 0 0.00% 0.00%
D 620159 467902 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 25267 9.56 7794 7346 1874.5
A 7 110 24216 9.0 7794 7346 1874.5
A 9 19 22990 8.35 7794 7346 1874.5
B 2 9 22473 10.82 7383 7060 1423.9
B 2 8 18599 8.1 7383 7060 1423.9
B 5 128 18565 8.08 7383 7060 1423.9
C 12 241 19666 6.62 7586 7124 1895.5
C 3 126 19298 6.42 7586 7124 1895.5
C 2 191 19124 6.33 7586 7124 1895.5

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