ASTROSAT CZTI

Data Quality Report

Orbit 20180703_T02_052T01_9000002208_level2

Creation date: 2025-11-23T07:00:04.213933
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/AS1T02_052T01_9000002208cztM0_level2.fits modeM0/AS1T02_052T01_9000002208cztM0_level2_quad_clean.evt
Size (bytes)250,957,440230,682,240
Size239.3 MB 220.0 MB
Events in quadrant A1,544,7901,425,565
Events in quadrant B1,449,7061,346,048
Events in quadrant C1,493,7261,307,076
Events in quadrant D1,243,4181,039,825

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0562030
B0670100
C0617970
D0899520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A271303581.319572%
B2713010313.800221%
C271306012.215260%
D27130329112.130483%

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 29461 27131 0 0 0.00% 0.00%
B 29461 27119 0 0 0.00% 0.00%
C 29461 27128 0 0 0.00% 0.00%
D 29461 27122 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 14 188 1559 11.63 401 374 101.9
A 0 29 1476 10.81 401 374 101.9
A 15 236 1288 8.97 401 374 101.9
B 2 9 1300 11.98 381 361 78.4
B 3 17 1023 8.45 381 361 78.4
B 2 8 989 8.01 381 361 78.4
C 7 111 1029 6.33 394 367 104.6
C 12 241 1024 6.28 394 367 104.6
C 2 191 1003 6.08 394 367 104.6
D 6 231 916 6.09 354 322 97.6
D 3 14 897 5.89 354 322 97.6
D 3 31 887 5.79 354 322 97.6

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