ASTROSAT CZTI

Data Quality Report

Orbit 12505

Creation date: 2024-06-27T16:28:22.080370
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_12505cztM0_level2.evt modeM0/AS1T01_218T01_9000001852_12505cztM0_level2_quad_clean.evt
Size (bytes)250,191,36036,302,400
Size238.6 MB 34.6 MB
Events in quadrant A1,865,005222,114
Events in quadrant B2,023,718228,894
Events in quadrant C1,562,264220,821
Events in quadrant D1,913,907206,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076132
B079691
C065651
D077501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3107571.834567%
B31071845.922111%
C3107210.675893%
D3107742.381719%

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 4448 3109 1 1 0.02% 0.03%
B 4448 3109 99 99 2.23% 3.18%
C 4448 3109 0 0 0.00% 0.00%
D 4448 3109 59 59 1.33% 1.90%

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 1 162 104886 1261.42 407 400 82.8
A 1 178 63046 756.3 407 400 82.8
A 1 161 53430 640.21 407 400 82.8
B 4 239 207117 2659.05 405 395 77.7
B 3 64 170795 2191.84 405 395 77.7
B 11 51 36439 463.63 405 395 77.7
C 14 234 10352 107.16 397 400 92.9
C 13 61 2845 26.33 397 400 92.9
C 14 67 1846 15.57 397 400 92.9
D 1 52 227124 2440.32 388 377 92.9
D 10 157 116780 1252.77 388 377 92.9
D 8 195 34416 366.34 388 377 92.9

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