ASTROSAT CZTI

Data Quality Report

Orbit 26454

Creation date: 2024-06-27T19:29:12.500128
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/AS1A09_056T01_9000003824_26454cztM0_level2.evt modeM0/AS1A09_056T01_9000003824_26454cztM0_level2_quad_clean.evt
Size (bytes)958,152,960164,531,520
Size913.8 MB 156.9 MB
Events in quadrant A6,022,7621,064,843
Events in quadrant B5,957,8811,081,896
Events in quadrant C6,314,7831,022,701
Events in quadrant D9,882,342954,636

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258050
B0254880
C0263630
D0374500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124142001.611084%
B124151531.232380%
C124152001.610954%
D1241410708.619301%

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 13929 12414 41 41 0.29% 0.33%
B 13930 12415 4 4 0.03% 0.03%
C 13930 12415 14 14 0.10% 0.11%
D 13928 12413 882 882 6.33% 7.11%

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 6 16 232969 776.35 1495 1463 298.2
A 13 254 18851 58.31 1495 1463 298.2
A 12 189 17106 52.46 1495 1463 298.2
B 0 190 113671 395.78 1490 1447 283.6
B 12 111 35664 120.67 1490 1447 283.6
B 11 111 31944 107.55 1490 1447 283.6
C 3 233 305172 905.9 1433 1436 335.3
C 14 238 227516 674.29 1433 1436 335.3
C 2 16 90766 266.43 1433 1436 335.3
D 7 80 2980139 8980.58 1393 1355 331.7
D 1 52 1100663 3314.25 1393 1355 331.7
D 12 233 448879 1349.22 1393 1355 331.7

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