ASTROSAT CZTI

Data Quality Report

Orbit 52666

Creation date: 2025-06-23T21:51:14.543388
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/AS1C09_011T07_9000006480_52666cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52666cztM0_level2_quad_clean.evt
Size (bytes)3,545,726,400203,757,120
Size3.3 GB 194.3 MB
Events in quadrant A21,182,3991,724,856
Events in quadrant B19,034,3601,862,930
Events in quadrant C51,707,379236,311
Events in quadrant D37,679,536864,637

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04340
B04340
C04340
D04340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780472
B0713802
C01683594
D01268192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21471233510.875134%
B2147119939.282288%
C214701921589.496973%
D214711151253.616506%

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 22331 21471 1763 1763 7.89% 8.21%
B 22331 21471 1389 1389 6.22% 6.47%
C 22330 21470 18530 18530 82.98% 86.31%
D 22331 21471 10737 10737 48.08% 50.01%

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 3 14 6182937 11432.88 2141 2088 540.6
A 8 249 4295645 7941.91 2141 2088 540.6
A 15 239 554747 1022.27 2141 2088 540.6
B 10 128 4463520 9905.41 2127 2057 450.4
B 12 32 1529714 3391.73 2127 2057 450.4
B 4 171 960256 2127.41 2127 2057 450.4
C 15 233 23360847 103144.29 823 817 226.5
C 15 248 15616787 68951.03 823 817 226.5
C 15 224 5503428 24296.32 823 817 226.5
D 12 3 22727896 54561.69 1433 1365 416.5
D 1 7 3072475 7373.1 1433 1365 416.5
D 8 176 2427773 5825.3 1433 1365 416.5

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