ASTROSAT CZTI

Data Quality Report

Orbit 53672

Creation date: 2025-08-30T12:28:23.290109
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/AS1A14_022T05_9000006504_53672cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53672cztM0_level2_quad_clean.evt
Size (bytes)1,178,550,72062,184,960
Size1.1 GB 59.3 MB
Events in quadrant A13,892,589226,650
Events in quadrant B4,141,262678,623
Events in quadrant C13,079,518236,763
Events in quadrant D12,019,344292,806

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0457231
B0165151
C0432461
D0402277

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6414445569.457437%
B64141902.962270%
C6415425966.391270%
D6414334952.213907%

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 7504 6414 4145 4145 55.24% 64.62%
B 7504 6414 63 63 0.84% 0.98%
C 7504 6414 3757 3757 50.07% 58.57%
D 7504 6414 3094 3094 41.23% 48.24%

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 63 8085907 67562.74 479 468 119.7
A 3 78 3392365 28343.03 479 468 119.7
A 4 249 259177 2161.8 479 468 119.7
B 7 0 384116 2505.37 708 684 153.0
B 5 172 347992 2269.33 708 684 153.0
B 10 254 153680 999.69 708 684 153.0
C 15 224 6466454 53986.69 434 429 119.8
C 1 241 4116031 34362.34 434 429 119.8
C 15 158 413524 3449.05 434 429 119.8
D 8 176 8052950 61641.84 453 432 130.6
D 12 34 777860 5951.19 453 432 130.6
D 3 12 761195 5823.62 453 432 130.6

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