ASTROSAT CZTI

Data Quality Report

Orbit 36512

Creation date: 2024-06-27T21:27:46.695652
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/AS1T05_035T01_9000005214_36512cztM0_level2.evt modeM0/AS1T05_035T01_9000005214_36512cztM0_level2_quad_clean.evt
Size (bytes)525,029,76074,439,360
Size500.7 MB 71.0 MB
Events in quadrant A3,053,214474,483
Events in quadrant B3,846,213466,876
Events in quadrant C3,167,443466,135
Events in quadrant D5,415,573415,846

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130393
B0153782
C0132282
D0201502

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6165190.308191%
B61651292.092457%
C6165530.859692%
D61655839.456610%

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 8969 6167 5 5 0.06% 0.08%
B 8969 6167 92 92 1.03% 1.49%
C 8969 6167 35 35 0.39% 0.57%
D 8969 6167 561 561 6.25% 9.10%

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 10 83 219139 1516.86 716 703 144.0
A 15 223 28464 192.78 716 703 144.0
A 7 3 15865 105.29 716 703 144.0
B 4 171 525058 3832.65 708 689 136.8
B 0 229 192425 1401.41 708 689 136.8
B 5 172 137813 1002.25 708 689 136.8
C 15 214 263586 1616.05 692 696 162.7
C 0 10 179685 1100.29 692 696 162.7
C 6 255 14557 85.21 692 696 162.7
D 12 227 1196693 7225.24 670 652 165.5
D 2 250 367308 2214.96 670 652 165.5
D 13 249 237518 1430.9 670 652 165.5

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