ASTROSAT CZTI

Data Quality Report

Orbit 29691

Creation date: 2024-06-27T20:06:53.360688
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_093T01_9000004274_29691cztM0_level2.evt modeM0/AS1A10_093T01_9000004274_29691cztM0_level2_quad_clean.evt
Size (bytes)566,328,96070,655,040
Size540.1 MB 67.4 MB
Events in quadrant A2,977,060442,041
Events in quadrant B5,253,830438,004
Events in quadrant C3,757,328414,284
Events in quadrant D4,725,632394,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131691
B0201712
C0151401
D0183021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6456430.666047%
B64561912.958488%
C64562614.042751%
D64563525.452292%

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 7231 6457 0 0 0.00% 0.00%
B 7231 6456 33 33 0.46% 0.51%
C 7231 6457 74 74 1.02% 1.15%
D 7231 6457 274 274 3.79% 4.24%

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 12878 78.53 771 753 154.4
A 3 137 7543 43.98 771 753 154.4
A 0 226 6513 37.3 771 753 154.4
B 6 159 1985408 13625.81 763 743 145.7
B 0 229 236658 1619.68 763 743 145.7
B 12 111 17841 117.38 763 743 145.7
C 3 233 585201 3404.62 734 739 171.7
C 14 238 132182 765.68 734 739 171.7
C 15 208 88068 508.71 734 739 171.7
D 7 80 895829 5215.86 731 711 171.6
D 8 195 609734 3548.78 731 711 171.6
D 13 153 129917 752.88 731 711 171.6

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