ASTROSAT CZTI

Data Quality Report

Orbit 28672

Creation date: 2024-06-27T19:54:44.667325
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_110T03_9000004114_28672cztM0_level2.evt modeM0/AS1A10_110T03_9000004114_28672cztM0_level2_quad_clean.evt
Size (bytes)513,282,24089,818,560
Size489.5 MB 85.7 MB
Events in quadrant A3,073,260586,138
Events in quadrant B3,557,088596,621
Events in quadrant C3,177,688564,370
Events in quadrant D5,315,763539,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128021
B0144431
C0131232
D0199301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6198500.806712%
B61981041.677961%
C61981542.484672%
D61985078.180058%

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 7348 6198 0 0 0.00% 0.00%
B 7348 6198 18 18 0.24% 0.29%
C 7348 6198 0 0 0.00% 0.00%
D 7348 6198 477 477 6.49% 7.70%

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 10749 63.44 796 783 157.1
A 3 137 7523 42.9 796 783 157.1
A 0 226 6860 38.68 796 783 157.1
B 10 245 448588 3037.52 783 764 147.4
B 12 16 24840 163.3 783 764 147.4
B 12 111 18090 117.52 783 764 147.4
C 14 238 155915 876.32 755 760 177.1
C 14 254 45532 252.87 755 760 177.1
C 3 233 37174 205.66 755 760 177.1
D 1 52 2113159 11996.8 748 731 176.1
D 8 195 312214 1768.96 748 731 176.1
D 2 234 21567 118.33 748 731 176.1

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