ASTROSAT CZTI

Data Quality Report

Orbit 42878

Creation date: 2024-06-27T22:45:17.260727
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_138T01_9000005828_42878cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42878cztM0_level2_quad_clean.evt
Size (bytes)115,254,72026,259,840
Size109.9 MB 25.0 MB
Events in quadrant A882,306175,952
Events in quadrant B738,075180,261
Events in quadrant C787,051181,455
Events in quadrant D1,737,920144,686

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035760
B032340
C032850
D062170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1520241.578947%
B152040.263158%
C1521140.920447%
D152125416.699540%

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 1520 1520 15 15 0.99% 0.99%
B 1520 1520 2 2 0.13% 0.13%
C 1521 1521 13 13 0.85% 0.85%
D 1521 1521 252 252 16.57% 16.57%

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 156733 4283.18 168 165 36.6
A 15 237 52310 1426.51 168 165 36.6
A 13 248 15689 424.69 168 165 36.6
B 0 190 26070 768.14 165 161 33.7
B 4 171 16474 483.64 165 161 33.7
B 15 85 15783 463.15 165 161 33.7
C 15 214 61234 1541.44 162 163 39.6
C 2 16 27477 689.41 162 163 39.6
C 14 254 21845 547.26 162 163 39.6
D 10 118 481240 12274.43 152 148 39.2
D 1 52 391999 9997.57 152 148 39.2
D 13 249 74283 1891.46 152 148 39.2

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