ASTROSAT CZTI

Data Quality Report

Orbit 16817

Creation date: 2024-06-27T17:28:09.324576
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/AS1A05_140T01_9000002496_16817cztM0_level2.evt modeM0/AS1A05_140T01_9000002496_16817cztM0_level2_quad_clean.evt
Size (bytes)764,694,720104,054,400
Size729.3 MB 99.2 MB
Events in quadrant A6,314,901635,975
Events in quadrant B5,020,966655,203
Events in quadrant C4,960,224630,907
Events in quadrant D6,255,472605,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01820
B01820
C01820
D01820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245343
B0208402
C0202292
D0246162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89866327.033163%
B8986951.057200%
C89861061.179613%
D89863964.406855%

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 10477 8989 394 394 3.76% 4.38%
B 10477 8989 18 18 0.17% 0.20%
C 10477 8989 3 3 0.03% 0.03%
D 10477 8989 252 252 2.41% 2.80%

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 15 174 2179177 9962.14 1072 1050 218.6
A 0 226 9426 38.31 1072 1050 218.6
A 9 143 9211 37.33 1072 1050 218.6
B 15 35 294811 1391.86 1099 1070 211.0
B 4 216 170864 804.55 1099 1070 211.0
B 0 229 55592 258.35 1099 1070 211.0
C 3 233 552968 2244.09 1055 1063 245.9
C 14 238 161853 653.78 1055 1063 245.9
C 0 207 130508 526.33 1055 1063 245.9
D 1 52 976962 3805.07 1052 1023 256.5
D 12 218 912367 3553.23 1052 1023 256.5
D 2 33 179998 697.8 1052 1023 256.5

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