ASTROSAT CZTI

Data Quality Report

Orbit 00666

Creation date: 2024-06-27T14:01:16.563133
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/AS1P01_124T01_9000000094_00666cztM0_level2.evt modeM0/AS1P01_124T01_9000000094_00666cztM0_level2_quad_clean.evt
Size (bytes)798,197,76041,279,040
Size761.2 MB 39.4 MB
Events in quadrant A5,857,199228,105
Events in quadrant B6,270,877229,144
Events in quadrant C5,304,923228,380
Events in quadrant D6,407,897213,081

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209382
B0222035
C0193172
D0226122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500160.119976%
B5000921.840000%
C500030.060000%
D50002004.000000%

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 7157 5002 111 111 1.55% 2.22%
B 7156 5001 227 227 3.17% 4.54%
C 7156 5001 27 27 0.38% 0.54%
D 7156 5001 432 432 6.04% 8.64%

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 14 79 29089 83.71 1482 1467 330.0
A 0 238 23636 67.18 1482 1467 330.0
A 0 69 21047 59.34 1482 1467 330.0
B 5 191 254417 722.15 1485 1494 350.2
B 7 221 178943 506.66 1485 1494 350.2
B 14 50 44627 123.15 1485 1494 350.2
C 15 241 14214 34.17 1343 1388 375.3
C 9 52 12189 28.78 1343 1388 375.3
C 5 249 4777 9.03 1343 1388 375.3
D 1 4 708340 1774.1 1265 1309 398.5
D 12 233 198600 495.05 1265 1309 398.5
D 13 221 184337 459.26 1265 1309 398.5

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