ASTROSAT CZTI

Data Quality Report

Orbit 37384

Creation date: 2024-06-27T21:39:17.769908
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/AS1C07_001T01_9000005320_37384cztM0_level2.evt modeM0/AS1C07_001T01_9000005320_37384cztM0_level2_quad_clean.evt
Size (bytes)1,249,994,880212,385,600
Size1.2 GB 202.5 MB
Events in quadrant A6,208,6621,455,682
Events in quadrant B6,073,9951,462,088
Events in quadrant C6,168,5971,451,836
Events in quadrant D18,591,0111,226,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261804
B0259966
C0259893
D0636293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12083440.364148%
B12081930.769804%
C12083970.802781%
D12083360329.818754%

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 16263 12086 17 17 0.10% 0.14%
B 16263 12085 49 49 0.30% 0.41%
C 16263 12086 60 60 0.37% 0.50%
D 16263 12086 3432 3432 21.10% 28.40%

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 561630 2093.08 1340 1313 267.7
A 6 10 199083 738.77 1340 1313 267.7
A 9 143 52212 190.13 1340 1313 267.7
B 0 229 174318 676.74 1334 1295 255.7
B 0 190 153309 594.57 1334 1295 255.7
B 5 172 143611 556.64 1334 1295 255.7
C 15 214 504513 1652.87 1308 1319 304.4
C 14 254 187373 611.14 1308 1319 304.4
C 0 10 138538 450.73 1308 1319 304.4
D 12 235 11365191 39114.89 1191 1156 290.5
D 2 249 869378 2988.41 1191 1156 290.5
D 13 249 640982 2202.27 1191 1156 290.5

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