ASTROSAT CZTI

Data Quality Report

Orbit 12518

Creation date: 2024-06-27T16:28:32.213981
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/AS1T01_218T01_9000001852_12518cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12518cztM0_level2_quad_clean.evt
Size (bytes)469,995,840103,394,880
Size448.2 MB 98.6 MB
Events in quadrant A3,406,103672,716
Events in quadrant B3,717,496693,936
Events in quadrant C3,008,162685,072
Events in quadrant D3,676,065641,758

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142323
B0152762
C0132352
D0149932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6273370.589829%
B62731672.662203%
C6273150.239120%
D6273781.243424%

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 7539 6275 0 0 0.00% 0.00%
B 7539 6275 75 75 0.99% 1.20%
C 7539 6275 0 0 0.00% 0.00%
D 7539 6275 31 31 0.41% 0.49%

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 140320 894.94 778 763 155.9
A 1 162 99941 636.0 778 763 155.9
A 1 178 58468 370.05 778 763 155.9
B 4 239 588986 4018.47 785 766 146.4
B 0 214 21990 144.99 785 766 146.4
B 12 111 16301 106.13 785 766 146.4
C 13 61 5589 27.04 770 774 178.1
C 14 234 3678 16.3 770 774 178.1
C 12 4 2799 11.37 770 774 178.1
D 1 52 576465 3194.86 751 730 180.2
D 7 71 76816 422.22 751 730 180.2
D 13 104 47329 258.59 751 730 180.2

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