ASTROSAT CZTI

Data Quality Report

Orbit 33689

Creation date: 2024-06-27T20:51:34.035945
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/AS1T04_090T01_9000004812_33689cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33689cztM0_level2_quad_clean.evt
Size (bytes)810,907,20070,326,720
Size773.3 MB 67.1 MB
Events in quadrant A13,433,104268,177
Events in quadrant B3,956,340488,332
Events in quadrant C3,147,109497,671
Events in quadrant D3,632,211470,329

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0438752
B0155141
C0128091
D0147161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5765477882.879445%
B57653335.776236%
C5765440.763226%
D57651182.046834%

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 7076 5764 4700 4700 66.42% 81.54%
B 7077 5766 268 268 3.79% 4.65%
C 7077 5766 44 44 0.62% 0.76%
D 7077 5766 99 99 1.40% 1.72%

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 15 169 11597427 142304.62 402 395 81.5
A 15 237 236615 2898.6 402 395 81.5
A 14 4 33714 408.85 402 395 81.5
B 5 172 1177979 9427.14 646 629 124.9
B 0 213 86445 687.14 646 629 124.9
B 15 85 33577 263.82 646 629 124.9
C 15 214 246867 1658.45 639 644 148.5
C 3 233 173178 1162.11 639 644 148.5
C 0 10 140275 940.49 639 644 148.5
D 8 195 486224 3026.98 635 618 160.4
D 8 230 206177 1281.34 635 618 160.4
D 13 249 175386 1089.4 635 618 160.4

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