ASTROSAT CZTI

Data Quality Report

Orbit 35759

Creation date: 2022-07-18T21:14:44.353289
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/AS1A10_058T14_9000005134_35759cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35759cztM0_level2_quad_clean.evt
Size (bytes)636,281,28073,909,440
Size606.8 MB 70.5 MB
Events in quadrant A3,855,209482,454
Events in quadrant B4,318,712484,783
Events in quadrant C3,131,485472,183
Events in quadrant D7,558,667379,057

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160393
B0168682
C0129862
D0266482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6001520.866522%
B60015128.531911%
C6001721.199800%
D6001171228.528579%

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 8897 6003 39 39 0.44% 0.65%
B 8897 6003 403 403 4.53% 6.71%
C 8897 6003 68 68 0.76% 1.13%
D 8897 6002 1711 1711 19.23% 28.51%

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 15 223 873362 6321.63 684 671 138.0
A 10 83 160754 1159.62 684 671 138.0
A 15 169 128675 927.24 684 671 138.0
B 5 172 1376498 10765.42 660 642 127.8
B 5 255 95565 742.72 660 642 127.8
B 0 213 51806 400.33 660 642 127.8
C 15 214 250585 1622.65 661 665 154.0
C 0 10 235525 1524.87 661 665 154.0
C 0 207 52275 335.09 661 665 154.0
D 1 52 4040218 27611.61 595 578 146.3
D 7 80 685033 4678.36 595 578 146.3
D 13 249 219486 1496.27 595 578 146.3

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