ASTROSAT CZTI

Data Quality Report

Orbit 15239

Creation date: 2024-06-27T17:05:42.359380
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_072T01_9000002250_15239cztM0_level2.evt modeM0/AS1T02_072T01_9000002250_15239cztM0_level2_quad_clean.evt
Size (bytes)359,778,24086,520,960
Size343.1 MB 82.5 MB
Events in quadrant A2,182,634593,632
Events in quadrant B2,498,830593,650
Events in quadrant C3,013,503572,876
Events in quadrant D2,907,082556,004

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093962
B0102691
C0117881
D0116451

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4321441.018283%
B43211082.499421%
C43211503.471419%
D4321601.388567%

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 5527 4322 0 0 0.00% 0.00%
B 5527 4322 41 41 0.74% 0.95%
C 5527 4323 108 108 1.95% 2.50%
D 5527 4322 15 15 0.27% 0.35%

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 12 189 121829 1123.93 531 520 107.9
A 9 143 6613 56.45 531 520 107.9
A 2 79 4949 41.03 531 520 107.9
B 3 64 204293 2052.83 530 517 99.3
B 10 245 69250 692.41 530 517 99.3
B 10 16 56323 562.19 530 517 99.3
C 4 254 521815 4492.38 508 511 116.0
C 3 233 484510 4170.9 508 511 116.0
C 7 247 13843 114.89 508 511 116.0
D 2 16 807724 6490.94 512 496 124.4
D 7 38 53143 423.34 512 496 124.4
D 1 255 43783 348.07 512 496 124.4

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