ASTROSAT CZTI

Data Quality Report

Orbit 16909

Creation date: 2024-06-27T17:29:24.019372
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/AS1A05_225T02_9000002510_16909cztM0_level2.evt modeM0/AS1A05_225T02_9000002510_16909cztM0_level2_quad_clean.evt
Size (bytes)430,721,28085,944,960
Size410.8 MB 82.0 MB
Events in quadrant A5,818,763536,816
Events in quadrant B2,238,309598,958
Events in quadrant C2,205,052573,698
Events in quadrant D2,464,694564,716

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205521
B097391
C095511
D0104691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4670100821.584582%
B4669791.692011%
C4669711.520668%
D4669811.734847%

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 5306 4673 679 679 12.80% 14.53%
B 5305 4672 3 3 0.06% 0.06%
C 5305 4672 0 0 0.00% 0.00%
D 5305 4672 25 25 0.47% 0.54%

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 15 174 3717773 35591.82 512 501 104.4
A 12 189 67614 642.59 512 501 104.4
A 0 23 51882 491.96 512 501 104.4
B 15 35 21304 198.33 548 533 104.7
B 0 189 19233 178.55 548 533 104.7
B 0 229 12192 111.32 548 533 104.7
C 14 238 81076 654.17 526 527 123.1
C 3 233 70231 566.09 526 527 123.1
C 13 61 3722 25.95 526 527 123.1
D 1 52 313219 2409.94 530 514 129.8
D 15 0 56985 435.21 530 514 129.8
D 13 112 43621 332.22 530 514 129.8

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