ASTROSAT CZTI

Data Quality Report

Orbit 14908

Creation date: 2024-06-27T17:01:10.789657
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/AS1A04_011T09_9000002202_14908cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14908cztM0_level2_quad_clean.evt
Size (bytes)321,508,80051,560,640
Size306.6 MB 49.2 MB
Events in quadrant A2,177,753330,183
Events in quadrant B2,554,302316,217
Events in quadrant C2,181,284308,332
Events in quadrant D2,536,169309,202

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A089191
B0101291
C087991
D0102131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4219140.331832%
B4219811.919886%
C421960.142214%
D4219571.351031%

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 4220 4220 0 0 0.00% 0.00%
B 4220 4220 49 49 1.16% 1.16%
C 4220 4220 0 0 0.00% 0.00%
D 4220 4220 52 52 1.23% 1.23%

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 3 1 17135 146.92 561 552 112.9
A 0 226 4832 37.92 561 552 112.9
A 12 194 4121 31.62 561 552 112.9
B 10 16 135029 1317.05 547 535 102.1
B 3 64 124486 1213.81 547 535 102.1
B 0 229 79551 773.78 547 535 102.1
C 3 233 123088 1017.65 527 530 120.4
C 13 61 3772 26.92 527 530 120.4
C 3 232 1892 11.31 527 530 120.4
D 7 223 200826 1601.64 532 520 125.1
D 7 254 155483 1239.08 532 520 125.1
D 13 249 57381 454.66 532 520 125.1

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