ASTROSAT CZTI

Data Quality Report

Orbit 11927

Creation date: 2024-06-27T16:20:11.091227
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_124T01_9000001766_11927cztM0_level2.evt modeM0/AS1A04_124T01_9000001766_11927cztM0_level2_quad_clean.evt
Size (bytes)330,549,12088,335,360
Size315.2 MB 84.2 MB
Events in quadrant A2,335,482597,026
Events in quadrant B2,789,127604,635
Events in quadrant C2,016,567592,880
Events in quadrant D2,557,862559,313

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100142
B0114111
C093701
D0106181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4576380.830420%
B45761613.518357%
C4576210.458916%
D4576641.398601%

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 5922 4578 0 0 0.00% 0.00%
B 5922 4577 66 66 1.11% 1.44%
C 5922 4578 3 3 0.05% 0.07%
D 5922 4578 30 30 0.51% 0.66%

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 82073 747.57 533 522 109.1
A 8 15 49310 447.24 533 522 109.1
A 1 178 44197 400.36 533 522 109.1
B 3 64 374846 3740.98 531 519 100.1
B 4 239 189802 1891.67 531 519 100.1
B 15 185 86435 858.63 531 519 100.1
C 14 234 7906 62.77 514 516 117.7
C 14 238 5342 40.99 514 516 117.7
C 13 61 3821 28.07 514 516 117.7
D 8 195 288893 2403.54 505 492 120.0
D 1 52 129097 1071.8 505 492 120.0
D 13 104 70077 579.92 505 492 120.0

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