ASTROSAT CZTI

Data Quality Report

Orbit 25180

Creation date: 2024-06-27T19:14:46.306441
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/AS1A07_171T02_9000003686_25180cztM0_level2.evt modeM0/AS1A07_171T02_9000003686_25180cztM0_level2_quad_clean.evt
Size (bytes)1,300,481,280257,250,240
Size1.2 GB 245.3 MB
Events in quadrant A8,721,4121,653,450
Events in quadrant B9,289,4191,675,346
Events in quadrant C9,652,2241,599,282
Events in quadrant D10,456,4311,573,941

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381940
B0394140
C0408220
D0429380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186981931.032196%
B187153411.822068%
C187054532.421812%
D187092711.448501%

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 21336 18734 0 0 0.00% 0.00%
B 21337 18747 62 62 0.29% 0.33%
C 21337 18731 102 102 0.48% 0.54%
D 21337 18755 100 100 0.47% 0.53%

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 13 254 29430 60.21 2260 2210 452.1
A 3 137 21285 42.19 2260 2210 452.1
A 0 226 19289 37.78 2260 2210 452.1
B 3 64 247675 574.97 2248 2190 427.0
B 10 251 69860 158.49 2248 2190 427.0
B 12 111 53193 119.46 2248 2190 427.0
C 7 247 834932 1644.52 2165 2176 506.4
C 14 238 345845 678.67 2165 2176 506.4
C 2 16 15500 26.31 2165 2176 506.4
D 8 195 877455 1661.59 2196 2132 526.8
D 12 233 662285 1253.14 2196 2132 526.8
D 12 235 273519 515.16 2196 2132 526.8

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