ASTROSAT CZTI

Data Quality Report

Orbit 20180

Creation date: 2024-06-27T18:12:06.866121
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/AS1C04_001T01_9000002994_20180cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20180cztM0_level2_quad_clean.evt
Size (bytes)2,034,380,160416,859,840
Size1.9 GB 397.5 MB
Events in quadrant A20,989,8542,658,849
Events in quadrant B11,096,0612,978,364
Events in quadrant C12,395,5472,823,236
Events in quadrant D15,721,2642,724,007

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04300
B04300
C04300
D04300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0757985
B0457086
C0501885
D0605105

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20906461022.051086%
B209064402.104659%
C209065032.406008%
D2090616137.715488%

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 25637 20912 2972 2972 11.59% 14.21%
B 25637 20912 40 40 0.16% 0.19%
C 25637 20912 1 1 0.00% 0.00%
D 25637 20912 1082 1082 4.22% 5.17%

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 14 238 11628396 24361.64 2398 2348 477.2
A 4 2 126345 259.83 2398 2348 477.2
A 13 254 25846 49.24 2398 2348 477.2
B 7 220 318027 660.96 2601 2537 477.3
B 0 197 210320 435.31 2601 2537 477.3
B 0 190 122735 251.82 2601 2537 477.3
C 3 233 2295816 4038.64 2490 2506 567.8
C 14 238 395999 692.96 2490 2506 567.8
C 13 61 17440 26.3 2490 2506 567.8
D 7 238 2355489 3963.32 2495 2428 593.7
D 1 52 2179304 3666.57 2495 2428 593.7
D 9 1 893067 1500.13 2495 2428 593.7

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