ASTROSAT CZTI

Data Quality Report

Orbit 20240223_A13_038T03_9000006088_level2

Creation date: 2024-02-27T14:02:39.775075
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_038T03_9000006088cztM0_level2.fits modeM0/AS1A13_038T03_9000006088cztM0_level2_quad_clean.evt
Size (bytes)233,697,600252,601,920
Size222.9 MB 240.9 MB
Events in quadrant A1,367,4641,506,631
Events in quadrant B1,354,7721,554,127
Events in quadrant C1,400,8041,485,315
Events in quadrant D1,185,0401,335,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0470
C0470
D0470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0833130
B0588500
C0553280
D0643940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05250
B05250
C05280
D05280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257009553.715953%
B257227362.861364%
C257333761.461159%
D256786732.620921%

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 40970 25842 0 0 0.00% 0.00%
B 40970 25840 0 0 0.00% 0.00%
C 40970 25833 0 0 0.00% 0.00%
D 40970 25805 0 0 0.00% 0.00%

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 7 110 1124 8.52 357 333 92.9
A 15 236 1104 8.3 357 333 92.9
A 14 95 1025 7.45 357 333 92.9
B 2 9 1318 13.12 358 341 74.5
B 2 8 1100 10.19 358 341 74.5
B 3 17 949 8.17 358 341 74.5
C 3 202 1069 7.47 369 344 97.1
C 1 81 1055 7.32 369 344 97.1
C 1 80 1022 6.98 369 344 97.1
D 10 189 902 6.19 340 309 95.8
D 7 3 875 5.91 340 309 95.8
D 15 47 866 5.82 340 309 95.8

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