ASTROSAT CZTI

Data Quality Report

Orbit 26961

Creation date: 2024-06-27T19:34:59.940438
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/AS1C05_019T03_9000003898_26961cztM0_level2.evt modeM0/AS1C05_019T03_9000003898_26961cztM0_level2_quad_clean.evt
Size (bytes)644,549,760119,972,160
Size614.7 MB 114.4 MB
Events in quadrant A3,667,739822,691
Events in quadrant B6,889,749776,545
Events in quadrant C3,326,744811,288
Events in quadrant D5,196,683769,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150790
B0247330
C0140820
D0199120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64811332.052152%
B6481148722.943990%
C64811131.743558%
D64824817.420549%

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 7376 6481 76 76 1.03% 1.17%
B 7376 6481 1212 1212 16.43% 18.70%
C 7376 6481 15 15 0.20% 0.23%
D 7377 6482 433 433 5.87% 6.68%

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 14 235 614802 3961.3 769 753 155.0
A 12 16 41971 265.9 769 753 155.0
A 8 192 16632 102.44 769 753 155.0
B 0 189 3687864 26907.05 731 711 137.0
B 5 172 222023 1615.03 731 711 137.0
B 0 230 41241 295.77 731 711 137.0
C 2 16 219350 1251.81 749 755 174.6
C 14 238 120103 683.46 749 755 174.6
C 15 208 54077 305.35 749 755 174.6
D 1 52 892570 5059.79 739 717 176.3
D 12 233 679800 3852.67 739 717 176.3
D 2 250 646512 3663.82 739 717 176.3

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