ASTROSAT CZTI

Data Quality Report

Orbit 20538

Creation date: 2024-06-27T18:16:33.337247
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/AS1A05_022T08_9000003036_20538cztM0_level2.evt modeM0/AS1A05_022T08_9000003036_20538cztM0_level2_quad_clean.evt
Size (bytes)518,895,36092,044,800
Size494.9 MB 87.8 MB
Events in quadrant A3,825,410614,508
Events in quadrant B3,605,056624,246
Events in quadrant C3,309,066582,388
Events in quadrant D4,557,193535,595

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153392
B0146702
C0136822
D0175902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61631903.082914%
B6163941.525231%
C61631282.076911%
D61634397.123154%

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 7473 6164 86 86 1.15% 1.40%
B 7473 6164 23 23 0.31% 0.37%
C 7473 6164 10 10 0.13% 0.16%
D 7473 6164 391 391 5.23% 6.34%

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 670854 4097.17 815 801 163.5
A 14 254 13190 75.76 815 801 163.5
A 0 226 7274 39.58 815 801 163.5
B 7 220 179945 1167.85 812 795 153.4
B 0 197 67788 436.72 812 795 153.4
B 0 190 60015 386.05 812 795 153.4
C 9 221 142383 792.98 768 776 178.6
C 14 238 122065 679.2 768 776 178.6
C 0 207 38760 212.71 768 776 178.6
D 1 52 860729 4675.62 754 732 183.9
D 12 238 479962 2605.47 754 732 183.9
D 7 38 167021 904.08 754 732 183.9

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