ASTROSAT CZTI

Data Quality Report

Orbit 39144

Creation date: 2024-06-27T22:01:06.181864
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/AS1A12_054T02_9000005444_39144cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39144cztM0_level2_quad_clean.evt
Size (bytes)73,788,48014,653,440
Size70.4 MB 14.0 MB
Events in quadrant A541,088103,710
Events in quadrant B485,310104,212
Events in quadrant C439,16095,566
Events in quadrant D1,199,22276,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021672
B019281
C017341
D041201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81670.857843%
B81620.245098%
C81620.245098%
D81618222.303922%

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 816 816 2 2 0.25% 0.25%
B 816 816 0 0 0.00% 0.00%
C 816 816 1 1 0.12% 0.12%
D 816 816 161 161 19.73% 19.73%

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 126879 5674.53 102 100 22.3
A 13 248 5911 260.1 102 100 22.3
A 15 223 4988 218.78 102 100 22.3
B 5 172 87388 4098.0 99 97 21.3
B 4 80 2451 110.51 99 97 21.3
B 12 111 2197 98.59 99 97 21.3
C 15 214 38697 1577.55 97 97 24.5
C 9 187 14700 596.81 97 97 24.5
C 0 10 6963 280.61 97 97 24.5
D 12 235 763210 30228.48 94 90 25.2
D 5 222 48209 1906.08 94 90 25.2
D 14 52 7997 313.21 94 90 25.2

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