ASTROSAT CZTI

Data Quality Report

Orbit 41400

Creation date: 2024-06-27T22:28:32.441544
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_035T01_9000005666_41400cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41400cztM0_level2_quad_clean.evt
Size (bytes)183,591,36048,335,040
Size175.1 MB 46.1 MB
Events in quadrant A1,569,659330,316
Events in quadrant B1,604,393330,320
Events in quadrant C1,655,719306,502
Events in quadrant D1,747,368297,453

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063342
B065551
C065071
D069751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2787110.394690%
B27871023.659849%
C27871284.592752%
D2787240.861141%

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 4669 2788 4 4 0.09% 0.14%
B 4669 2788 74 74 1.58% 2.65%
C 4669 2788 125 125 2.68% 4.48%
D 4669 2788 20 20 0.43% 0.72%

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 10 83 253915 3751.01 322 316 67.6
A 13 248 49833 732.41 322 316 67.6
A 13 6 6935 97.9 322 316 67.6
B 5 255 331371 5357.08 315 307 61.8
B 0 190 16847 267.64 315 307 61.8
B 0 189 9435 147.7 315 307 61.8
C 0 10 336886 4621.28 307 309 72.8
C 15 214 115813 1585.9 307 309 72.8
C 12 249 2086 24.4 307 309 72.8
D 13 174 177822 2263.93 318 309 78.4
D 12 79 172375 2194.46 318 309 78.4
D 13 249 75239 955.63 318 309 78.4

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