ASTROSAT CZTI

Data Quality Report

Orbit 18527

Creation date: 2024-06-27T17:51:01.301587
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_187T03_9000002748_18527cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18527cztM0_level2_quad_clean.evt
Size (bytes)555,629,76094,320,000
Size529.9 MB 90.0 MB
Events in quadrant A3,341,941642,561
Events in quadrant B3,359,616654,470
Events in quadrant C3,319,632612,299
Events in quadrant D6,382,651510,679

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138312
B0138052
C0137173
D0232712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242941.505928%
B6242841.345723%
C62411071.714469%
D6241112117.961865%

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 7582 6242 11 11 0.15% 0.18%
B 7582 6242 1 1 0.01% 0.02%
C 7581 6241 2 2 0.03% 0.03%
D 7580 6240 1010 1010 13.32% 16.19%

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 0 13 65058 384.39 837 822 167.1
A 15 192 25657 148.61 837 822 167.1
A 9 143 14421 81.38 837 822 167.1
B 3 64 49755 313.34 835 816 156.2
B 4 171 21022 129.37 835 816 156.2
B 12 111 17733 108.31 835 816 156.2
C 14 238 125243 675.24 795 802 184.3
C 3 233 78472 421.45 795 802 184.3
C 0 207 14041 71.84 795 802 184.3
D 7 238 2857825 15831.96 745 725 180.5
D 13 168 497360 2751.99 745 725 180.5
D 1 52 94204 517.99 745 725 180.5

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