ASTROSAT CZTI

Data Quality Report

Orbit 19120

Creation date: 2024-06-27T17:59:16.554751
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_046T01_9000002838_19120cztM0_level2.evt modeM0/AS1A05_046T01_9000002838_19120cztM0_level2_quad_clean.evt
Size (bytes)546,217,920108,385,920
Size520.9 MB 103.4 MB
Events in quadrant A3,297,669712,324
Events in quadrant B3,665,891742,060
Events in quadrant C3,423,844710,887
Events in quadrant D5,716,878666,409

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138422
B0149702
C0140892
D0212832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469480.742000%
B64691141.762251%
C64691011.561292%
D64694867.512753%

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 9044 6471 0 0 0.00% 0.00%
B 9044 6471 9 9 0.10% 0.14%
C 9044 6471 4 4 0.04% 0.06%
D 9044 6470 341 341 3.77% 5.27%

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 0 226 7478 38.66 856 840 171.7
A 13 254 6348 32.07 856 840 171.7
A 3 137 6267 31.6 856 840 171.7
B 10 245 175226 1078.68 865 846 161.7
B 7 220 56357 343.38 865 846 161.7
B 12 111 18659 110.19 865 846 161.7
C 14 238 130663 666.97 836 842 194.6
C 9 54 25230 125.3 836 842 194.6
C 3 233 6356 28.33 836 842 194.6
D 7 238 1903843 9565.79 817 796 198.9
D 12 218 514682 2583.08 817 796 198.9
D 11 176 102186 509.64 817 796 198.9

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