ASTROSAT CZTI

Data Quality Report

Orbit 28923

Creation date: 2024-06-27T19:58:00.038326
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/AS1A10_048T07_9000004148_28923cztM0_level2.evt modeM0/AS1A10_048T07_9000004148_28923cztM0_level2_quad_clean.evt
Size (bytes)612,717,12097,410,240
Size584.3 MB 92.9 MB
Events in quadrant A3,329,649630,893
Events in quadrant B3,388,835651,552
Events in quadrant C4,549,000608,835
Events in quadrant D6,829,512585,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140512
B0142052
C0183683
D0249302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6791540.795170%
B6791640.942424%
C67901802.650957%
D67903815.611193%

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 7831 6792 0 0 0.00% 0.00%
B 7831 6792 0 0 0.00% 0.00%
C 7830 6791 13 13 0.17% 0.19%
D 7830 6791 284 284 3.63% 4.18%

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 11565 61.29 862 844 174.9
A 3 137 8349 42.91 862 844 174.9
A 0 226 7239 36.56 862 844 174.9
B 12 111 20110 117.7 854 833 163.8
B 11 111 18251 106.35 854 833 163.8
B 14 111 16821 97.62 854 833 163.8
C 3 233 1139910 5944.35 819 825 191.6
C 14 238 133639 693.09 819 825 191.6
C 15 208 43364 221.99 819 825 191.6
D 8 195 3350725 17297.75 817 794 193.7
D 1 52 359235 1850.85 817 794 193.7
D 2 234 23721 118.38 817 794 193.7

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