ASTROSAT CZTI

Data Quality Report

Orbit 37975

Creation date: 2024-06-27T21:46:53.625117
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/AS1A11_082T01_9000005356_37975cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37975cztM0_level2_quad_clean.evt
Size (bytes)519,056,64078,811,200
Size495.0 MB 75.2 MB
Events in quadrant A5,413,231483,820
Events in quadrant B3,839,910499,481
Events in quadrant C2,943,595510,850
Events in quadrant D3,127,250483,864

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204743
B0152842
C0124062
D0130202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58461402.394800%
B58461883.215874%
C5846350.598700%
D5846901.539514%

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 7128 5847 99 99 1.39% 1.69%
B 7128 5847 134 134 1.88% 2.29%
C 7128 5847 29 29 0.41% 0.50%
D 7128 5847 57 57 0.80% 0.97%

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 15 222 2374828 17804.68 653 641 133.3
A 10 83 406983 3047.27 653 641 133.3
A 12 16 62902 466.91 653 641 133.3
B 5 184 605859 4797.8 651 633 126.1
B 0 229 137312 1083.49 651 633 126.1
B 12 18 123567 974.53 651 633 126.1
C 15 214 248354 1651.35 641 645 150.0
C 0 10 154199 1023.67 641 645 150.0
C 14 254 24189 156.96 641 645 150.0
D 7 223 200187 1290.69 636 619 154.6
D 10 199 170245 1097.04 636 619 154.6
D 13 249 68063 436.19 636 619 154.6

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