ASTROSAT CZTI

Data Quality Report

Orbit 13777

Creation date: 2024-06-27T16:45:57.706857
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_199T01_9000002040_13777cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13777cztM0_level2_quad_clean.evt
Size (bytes)456,926,40093,997,440
Size435.8 MB 89.6 MB
Events in quadrant A3,191,815602,179
Events in quadrant B3,384,843618,525
Events in quadrant C3,166,992603,160
Events in quadrant D3,649,954566,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136603
B0142102
C0135302
D0152882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6544470.718215%
B6544791.207213%
C6544160.244499%
D6544520.794621%

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 8805 6547 2 2 0.02% 0.03%
B 8805 6547 6 6 0.07% 0.09%
C 8805 6547 0 0 0.00% 0.00%
D 8805 6547 33 33 0.37% 0.50%

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 27634 161.87 813 796 165.8
A 1 178 9465 52.29 813 796 165.8
A 1 161 8618 47.18 813 796 165.8
B 15 33 41462 261.92 821 803 155.2
B 0 219 28991 181.58 821 803 155.2
B 4 173 21681 134.49 821 803 155.2
C 3 233 63736 341.01 794 801 184.6
C 14 220 6344 30.03 794 801 184.6
C 13 61 5528 25.61 794 801 184.6
D 1 52 352562 1856.04 782 760 189.5
D 13 249 119541 626.67 782 760 189.5
D 5 222 90859 475.35 782 760 189.5

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