ASTROSAT CZTI

Data Quality Report

Orbit 23951

Creation date: 2024-06-27T19:00:24.768473
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_101T02_9000003544_23951cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23951cztM0_level2_quad_clean.evt
Size (bytes)508,907,52095,423,040
Size485.3 MB 91.0 MB
Events in quadrant A3,128,458625,404
Events in quadrant B3,759,403623,806
Events in quadrant C3,125,424609,712
Events in quadrant D4,954,490573,937

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133621
B0151791
C0133231
D0190411

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6544470.718215%
B65451902.902979%
C6545550.840336%
D65454797.318564%

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 7549 6545 0 0 0.00% 0.00%
B 7550 6546 98 98 1.30% 1.50%
C 7550 6546 0 0 0.00% 0.00%
D 7550 6546 395 395 5.23% 6.03%

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 9224 51.77 808 793 162.9
A 14 111 8850 49.47 808 793 162.9
A 2 79 8243 45.75 808 793 162.9
B 3 64 618711 4114.82 790 770 150.2
B 0 189 29718 192.76 790 770 150.2
B 12 111 18435 117.63 790 770 150.2
C 14 238 123127 690.49 767 773 177.2
C 0 10 7546 38.22 767 773 177.2
C 13 61 5270 25.38 767 773 177.2
D 12 218 1867428 10095.47 763 739 184.9
D 8 195 129621 697.02 763 739 184.9
D 12 250 37099 196.64 763 739 184.9

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