ASTROSAT CZTI

Data Quality Report

Orbit 24221

Creation date: 2024-06-27T19:03:38.797040
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/AS1A07_091T05_9000003584_24221cztM0_level2.evt modeM0/AS1A07_091T05_9000003584_24221cztM0_level2_quad_clean.evt
Size (bytes)285,693,12034,704,000
Size272.5 MB 33.1 MB
Events in quadrant A1,831,863202,820
Events in quadrant B1,990,461203,120
Events in quadrant C2,059,475195,219
Events in quadrant D2,523,543193,688

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076692
B081071
C083031
D0100201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A36172065.695328%
B36172938.100636%
C36172807.741222%
D36172186.027094%

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 3652 3617 0 0 0.00% 0.00%
B 3652 3618 29 29 0.79% 0.80%
C 3652 3617 5 5 0.14% 0.14%
D 3652 3617 10 10 0.27% 0.28%

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 13 254 4882 45.12 475 465 97.9
A 3 137 4401 40.2 475 465 97.9
A 0 226 4011 36.22 475 465 97.9
B 12 17 141161 1536.9 468 455 91.6
B 12 111 11743 123.3 468 455 91.6
B 11 111 10443 109.1 468 455 91.6
C 7 247 114813 1073.03 450 452 106.6
C 2 16 110419 1031.8 450 452 106.6
C 14 238 70353 655.87 450 452 106.6
D 8 195 665616 5882.23 458 442 113.1
D 12 233 90296 794.59 458 442 113.1
D 7 238 42560 372.46 458 442 113.1

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