ASTROSAT CZTI

Data Quality Report

Orbit 50590

Creation date: 2025-02-04T10:43:39.830136
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/AS1T05_239T01_9000006444_50590cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50590cztM0_level2_quad_clean.evt
Size (bytes)794,856,96079,182,720
Size758.0 MB 75.5 MB
Events in quadrant A4,255,029609,175
Events in quadrant B12,258,208337,931
Events in quadrant C5,295,539555,987
Events in quadrant D7,095,740427,877

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170421
B0410221
C0202721
D0257471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66922093.123132%
B6693369255.162110%
C66935378.023308%
D6693164024.503212%

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 7567 6693 143 143 1.89% 2.14%
B 7568 6694 2988 2988 39.48% 44.64%
C 7568 6694 379 379 5.01% 5.66%
D 7568 6694 1296 1296 17.12% 19.36%

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 12 250 420439 2477.56 686 670 169.4
A 8 38 287083 1690.46 686 670 169.4
A 4 3 228479 1344.57 686 670 169.4
B 4 170 4092289 34472.23 553 534 118.7
B 7 0 2948844 24838.93 553 534 118.7
B 5 172 2001597 16858.56 553 534 118.7
C 15 158 1446056 7942.93 664 658 182.0
C 15 157 197107 1079.55 664 658 182.0
C 15 234 157304 860.82 664 658 182.0
D 2 165 3355997 20765.94 579 558 161.6
D 5 157 388242 2399.28 579 558 161.6
D 8 48 292828 1808.78 579 558 161.6

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