ASTROSAT CZTI

Data Quality Report

Orbit 49649

Creation date: 2024-12-04T11:15:05.623994
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_233T01_9000006438_49649cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49649cztM0_level2_quad_clean.evt
Size (bytes)1,269,383,04037,745,280
Size1.2 GB 36.0 MB
Events in quadrant A16,754,2697,486
Events in quadrant B4,682,755662,061
Events in quadrant C8,820,1588,013
Events in quadrant D16,225,94310,094

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543341
B0185551
C0308101
D0526111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6531648699.310978%
B65314136.323687%
C6531647899.188486%
D6531645298.790384%

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 7565 6530 6317 6317 83.50% 96.74%
B 7566 6531 256 256 3.38% 3.92%
C 7565 6530 1244 1244 16.44% 19.05%
D 7565 6530 6207 6207 82.05% 95.05%

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 99 6390592 69088.33 283 271 92.5
A 10 83 4256434 46015.09 283 271 92.5
A 0 98 991269 10714.08 283 271 92.5
B 4 206 681265 4552.88 701 679 149.5
B 1 238 313931 2095.54 701 679 149.5
B 5 173 243138 1621.96 701 679 149.5
C 15 180 3065881 117876.52 62 60 26.0
C 15 190 1167179 44874.09 62 60 26.0
C 15 163 809353 31116.18 62 60 26.0
D 7 45 3538152 40092.22 221 209 88.2
D 15 40 2611902 29595.89 221 209 88.2
D 7 60 2249601 25490.27 221 209 88.2

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