ASTROSAT CZTI

Data Quality Report

Orbit 17373

Creation date: 2024-06-27T17:35:42.506964
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/AS1T03_033T01_9000002568_17373cztM0_level2.evt modeM0/AS1T03_033T01_9000002568_17373cztM0_level2_quad_clean.evt
Size (bytes)542,148,48076,426,560
Size517.0 MB 72.9 MB
Events in quadrant A2,729,590488,024
Events in quadrant B2,886,685492,977
Events in quadrant C2,805,721477,506
Events in quadrant D7,598,100444,695

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121321
B0124981
C0121521
D0266351

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5879390.663378%
B5879861.462834%
C5879821.394795%
D5879153626.126892%

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 6209 5881 0 0 0.00% 0.00%
B 6209 5881 10 10 0.16% 0.17%
C 6209 5881 0 0 0.00% 0.00%
D 6209 5881 1282 1282 20.65% 21.80%

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 0 226 6346 38.91 709 694 145.3
A 12 194 5192 30.96 709 694 145.3
A 3 137 5094 30.29 709 694 145.3
B 7 220 57535 412.21 706 688 137.9
B 4 216 20095 140.72 706 688 137.9
B 12 111 16116 111.87 706 688 137.9
C 14 238 104511 648.77 680 683 160.0
C 3 233 47890 294.97 680 683 160.0
C 13 61 4940 26.6 680 683 160.0
D 11 176 4238140 28037.32 609 591 151.1
D 13 232 611684 4043.24 609 591 151.1
D 7 238 124257 818.22 609 591 151.1

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