ASTROSAT CZTI

Data Quality Report

Orbit 41295

Creation date: 2024-06-27T22:27:07.706575
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/AS1A12_011T42_9000005640_41295cztM0_level2.fits modeM0/AS1A12_011T42_9000005640_41295cztM0_level2_quad_clean.evt
Size (bytes)83,459,52021,326,400
Size79.6 MB 20.3 MB
Events in quadrant A755,408142,485
Events in quadrant B683,488146,476
Events in quadrant C795,827131,176
Events in quadrant D750,824128,411

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030211
B028391
C031551
D030951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A129860.462250%
B129810.077042%
C1298735.624037%
D129890.693374%

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 1298 1298 2 2 0.15% 0.15%
B 1298 1298 0 0 0.00% 0.00%
C 1298 1298 69 69 5.32% 5.32%
D 1298 1298 5 5 0.39% 0.39%

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 10 83 177604 5603.13 146 143 31.7
A 12 189 12399 386.97 146 143 31.7
A 3 137 1592 45.75 146 143 31.7
B 7 202 88549 2987.33 142 138 29.6
B 0 245 17395 583.1 142 138 29.6
B 0 229 10665 355.7 142 138 29.6
C 0 10 191449 5625.14 138 140 34.0
C 15 214 59202 1736.62 138 140 34.0
C 15 111 3890 110.26 138 140 34.0
D 1 47 63784 1698.25 145 141 37.5
D 1 52 50817 1352.23 145 141 37.5
D 2 249 35954 955.63 145 141 37.5

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