ASTROSAT CZTI

Data Quality Report

Orbit 33129

Creation date: 2024-06-27T20:45:17.097852
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/AS1A11_096T01_9000004766_33129cztM0_level2.evt modeM0/AS1A11_096T01_9000004766_33129cztM0_level2_quad_clean.evt
Size (bytes)1,281,928,320153,648,000
Size1.2 GB 146.5 MB
Events in quadrant A6,027,648961,676
Events in quadrant B9,381,627968,460
Events in quadrant C6,771,061953,069
Events in quadrant D15,747,590852,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268694
B0367433
C0288493
D0560593

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13270240.180859%
B132709146.887717%
C132701391.047476%
D13270292022.004521%

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 15894 13272 2 2 0.01% 0.02%
B 15894 13272 577 577 3.63% 4.35%
C 15894 13272 83 83 0.52% 0.63%
D 15894 13270 2156 2156 13.56% 16.25%

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 13 6 30279 93.38 1543 1510 308.1
A 13 254 25045 76.39 1543 1510 308.1
A 14 235 15842 46.52 1543 1510 308.1
B 5 172 2050526 7145.71 1503 1465 286.8
B 5 200 898307 3127.57 1503 1465 286.8
B 0 219 136639 471.39 1503 1465 286.8
C 0 10 406472 1168.61 1504 1516 346.5
C 7 221 257711 739.32 1504 1516 346.5
C 9 187 105879 301.17 1504 1516 346.5
D 12 218 2563049 7310.33 1319 1292 350.4
D 2 249 2094763 5974.01 1319 1292 350.4
D 8 195 1906867 5437.83 1319 1292 350.4

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