ASTROSAT CZTI

Data Quality Report

Orbit 00597

Creation date: 2024-06-27T14:00:20.380609
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_126T01_9000000084_00597cztM0_level2.evt modeM0/AS1P01_126T01_9000000084_00597cztM0_level2_quad_clean.evt
Size (bytes)819,270,72047,076,480
Size781.3 MB 44.9 MB
Events in quadrant A6,072,087269,883
Events in quadrant B6,226,514273,271
Events in quadrant C5,389,818272,352
Events in quadrant D6,791,389259,120

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216003
B0220712
C0195802
D0237552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A498740.080209%
B4987100.200521%
C4987310.621616%
D49872024.050531%

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 7143 4988 130 130 1.82% 2.61%
B 7143 4988 139 139 1.95% 2.79%
C 7143 4988 79 79 1.11% 1.58%
D 7143 4988 527 527 7.38% 10.57%

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 13 160 55886 158.82 1521 1499 342.4
A 0 238 32793 91.39 1521 1499 342.4
A 15 249 26962 74.36 1521 1499 342.4
B 7 221 330234 925.78 1494 1502 355.1
B 8 38 68892 189.78 1494 1502 355.1
B 4 250 44922 122.28 1494 1502 355.1
C 3 159 140947 378.34 1327 1373 368.9
C 15 241 17156 42.78 1327 1373 368.9
C 5 249 9607 22.32 1327 1373 368.9
D 12 237 869794 2197.62 1329 1366 395.2
D 1 4 273990 689.9 1329 1366 395.2
D 13 221 190785 479.34 1329 1366 395.2

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