ASTROSAT CZTI

Data Quality Report

Orbit 22487

Creation date: 2024-06-27T18:41:50.248381
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_144T02_9000003340_22487cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22487cztM0_level2_quad_clean.evt
Size (bytes)1,179,429,120178,064,640
Size1.1 GB 169.8 MB
Events in quadrant A8,379,1361,402,267
Events in quadrant B8,690,1621,434,858
Events in quadrant C2,598,192258
Events in quadrant D14,814,8271,307,406

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03640
B03640
C03640
D03640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367653
B0374693
C0180323
D0565833

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180281690.937431%
B180272291.270317%
C1802818028100.000000%
D1802813107.266474%

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 19658 18028 0 0 0.00% 0.00%
B 19657 18027 18 18 0.09% 0.10%
C 19657 18027 0 0 0.00% 0.00%
D 19658 18028 1133 1133 5.76% 6.28%

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 25911 54.45 2168 2122 436.9
A 3 137 19212 39.11 2168 2122 436.9
A 6 240 18542 37.58 2168 2122 436.9
B 15 33 139677 331.33 2155 2096 415.2
B 0 190 55547 128.72 2155 2096 415.2
B 12 111 51606 119.23 2155 2096 415.2
C 7 119 2563334 822986.33 6 6 3.1
C 7 226 5366 1720.89 6 6 3.1
C 14 238 2750 880.99 6 6 3.1
D 1 52 4754932 9555.0 2050 1990 497.4
D 12 235 887985 1781.15 2050 1990 497.4
D 1 20 759379 1522.6 2050 1990 497.4

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