ASTROSAT CZTI

Data Quality Report

Orbit 46798

Creation date: 2024-06-27T23:27:47.496703
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/AS1A13_068T13_9000006268_46798cztM0_level2.fits modeM0/AS1A13_068T13_9000006268_46798cztM0_level2_quad_clean.evt
Size (bytes)556,274,880116,694,720
Size530.5 MB 111.3 MB
Events in quadrant A6,563,512786,500
Events in quadrant B3,398,326809,784
Events in quadrant C3,257,686784,185
Events in quadrant D6,787,575628,251

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243490
B0155380
C0153510
D0255080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7534290.384922%
B7534110.146005%
C7533220.292048%
D7533107414.257268%

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 7534 7534 3 3 0.04% 0.04%
B 7534 7534 2 2 0.03% 0.03%
C 7533 7533 18 18 0.24% 0.24%
D 7533 7533 1032 1032 13.70% 13.70%

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 10 83 3392579 20413.7 801 784 166.2
A 0 243 12890 72.86 801 784 166.2
A 13 248 12879 72.79 801 784 166.2
B 0 198 83246 518.43 805 781 159.1
B 3 112 43500 268.56 805 781 159.1
B 12 111 20727 125.39 805 781 159.1
C 14 254 85272 452.08 795 799 186.9
C 3 233 43195 226.89 795 799 186.9
C 7 220 8275 40.01 795 799 186.9
D 13 249 2823073 15082.34 741 717 187.1
D 11 224 608322 3246.97 741 717 187.1
D 13 138 222948 1187.57 741 717 187.1

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