ASTROSAT CZTI

Data Quality Report

Orbit 33693

Creation date: 2024-06-27T20:51:35.700737
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_33693cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33693cztM0_level2_quad_clean.evt
Size (bytes)861,742,08060,405,120
Size821.8 MB 57.6 MB
Events in quadrant A14,187,286127,398
Events in quadrant B4,062,130434,486
Events in quadrant C3,247,374453,614
Events in quadrant D4,227,498424,315

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460362
B0155731
C0129011
D0165981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5529552499.909568%
B55295079.169832%
C5529601.085187%
D55291813.273648%

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 7141 5528 5444 5444 76.24% 98.48%
B 7142 5530 409 409 5.73% 7.40%
C 7142 5530 55 55 0.77% 0.99%
D 7142 5530 183 183 2.56% 3.31%

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 12940839 263058.97 240 235 49.2
A 15 237 169764 3446.22 240 235 49.2
A 14 4 139722 2835.52 240 235 49.2
B 5 172 1418488 11892.35 621 605 119.2
B 0 213 64636 537.05 621 605 119.2
B 4 251 54014 447.96 621 605 119.2
C 3 233 375019 2560.0 630 636 146.2
C 15 214 237091 1616.86 630 636 146.2
C 0 10 130166 885.71 630 636 146.2
D 8 195 1146588 7320.49 630 610 156.5
D 13 249 223250 1422.22 630 610 156.5
D 15 0 120237 764.17 630 610 156.5

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