ASTROSAT CZTI

Data Quality Report

Orbit 20190211_A05_019T01_9000002718_level2

Creation date: 2025-11-27T16:23:44.714764
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/AS1A05_019T01_9000002718cztM0_level2.fits modeM0/AS1A05_019T01_9000002718cztM0_level2_quad_clean.evt
Size (bytes)1,568,934,7201,486,647,360
Size1.5 GB 1.4 GB
Events in quadrant A9,760,1589,031,408
Events in quadrant B9,377,3749,037,975
Events in quadrant C9,316,0988,396,833
Events in quadrant D8,172,4927,669,080

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02590
B02590
C02590
D02590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03445050
B03380660
C03309230
D03976710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032380
B032380
C032380
D032380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15892526391.660532%
B15892523351.469246%
C15892523141.456033%
D15892551373.232342%

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 184840 158922 0 0 0.00% 0.00%
B 184840 158924 0 0 0.00% 0.00%
C 184840 158926 0 0 0.00% 0.00%
D 184839 158887 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 9101 10.8 2541 2381 622.3
A 7 110 7795 8.7 2541 2381 622.3
A 9 19 7242 7.81 2541 2381 622.3
B 2 9 7667 10.9 2475 2366 486.2
B 2 8 6403 8.3 2475 2366 486.2
B 14 254 6077 7.63 2475 2366 486.2
C 12 241 6433 6.61 2461 2292 626.7
C 3 126 6346 6.47 2461 2292 626.7
C 2 191 6253 6.32 2461 2292 626.7
D 10 190 6129 6.55 2328 2115 613.2
D 3 14 5906 6.18 2328 2115 613.2
D 6 231 5783 5.98 2328 2115 613.2

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