ASTROSAT CZTI

Data Quality Report

Orbit 12039

Creation date: 2024-06-27T16:21:31.522702
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/AS1A04_044T01_9000001782_12039cztM0_level2.evt modeM0/AS1A04_044T01_9000001782_12039cztM0_level2_quad_clean.evt
Size (bytes)383,857,92029,522,880
Size366.1 MB 28.2 MB
Events in quadrant A1,595,791183,574
Events in quadrant B2,359,124182,504
Events in quadrant C1,547,736181,464
Events in quadrant D5,898,630112,349

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068741
B092891
C068191
D0197801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3279260.792925%
B32791905.794450%
C3279190.579445%
D3279185556.572126%

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 3280 3280 0 0 0.00% 0.00%
B 3280 3280 102 102 3.11% 3.11%
C 3280 3280 7 7 0.21% 0.21%
D 3279 3279 1789 1789 54.56% 54.56%

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 24553 292.17 398 389 82.7
A 1 178 12382 145.01 398 389 82.7
A 1 161 10847 126.45 398 389 82.7
B 4 239 781413 10178.46 392 382 76.7
B 15 204 36134 465.92 392 382 76.7
B 0 85 13934 176.61 392 382 76.7
C 14 234 29755 323.66 388 391 90.7
C 0 207 4891 49.6 388 391 90.7
C 13 61 2870 27.32 388 391 90.7
D 1 52 4817630 84315.89 233 226 57.1
D 8 195 94939 1657.7 233 226 57.1
D 5 222 64801 1130.21 233 226 57.1

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