ASTROSAT CZTI

Data Quality Report

Orbit 52964

Creation date: 2025-07-17T11:26:51.516034
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/AS1A13_003T01_9000006486_52964cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52964cztM0_level2_quad_clean.evt
Size (bytes)2,248,747,200181,967,040
Size2.1 GB 173.5 MB
Events in quadrant A29,890,798590,094
Events in quadrant B11,638,4001,573,700
Events in quadrant C15,321,4831,272,720
Events in quadrant D25,146,739957,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0996904
B04566617
C0568344
D0860564

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161621045164.664027%
B1616113648.440072%
C16162214413.265685%
D16162523832.409355%

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 19286 16161 9877 9877 51.21% 61.12%
B 19287 16161 923 923 4.79% 5.71%
C 19287 16164 1830 1830 9.49% 11.32%
D 19287 16162 4861 4861 25.20% 30.08%

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 9 191 25083325 99751.41 1015 991 251.4
A 0 8 277478 1099.58 1015 991 251.4
A 13 248 122053 481.46 1015 991 251.4
B 12 17 1248052 3469.88 1705 1646 359.2
B 10 254 1019939 2834.83 1705 1646 359.2
B 10 63 907657 2522.25 1705 1646 359.2
C 12 254 2436894 5565.01 1624 1614 437.6
C 4 5 2147220 4903.06 1624 1614 437.6
C 2 12 807155 1840.79 1624 1614 437.6
D 8 176 7329210 17913.74 1459 1398 409.1
D 15 78 4765268 11645.87 1459 1398 409.1
D 2 62 2150905 5254.73 1459 1398 409.1

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