ASTROSAT CZTI

Data Quality Report

Orbit 13177

Creation date: 2024-06-27T16:37:15.964721
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/AS1G08_034T01_9000001944_13177cztM0_level2.evt modeM0/AS1G08_034T01_9000001944_13177cztM0_level2_quad_clean.evt
Size (bytes)1,798,934,400294,949,440
Size1.7 GB 281.3 MB
Events in quadrant A12,629,3231,793,406
Events in quadrant B15,254,2671,817,162
Events in quadrant C11,512,2621,835,813
Events in quadrant D13,349,2001,719,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543306
B0624394
C0525204
D0575154

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05220
B05220
C05220
D05220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A256922771.078157%
B2569211604.515024%
C256921570.611085%
D256924961.930562%

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 38473 25698 6 6 0.02% 0.02%
B 38473 25698 604 604 1.57% 2.35%
C 38473 25698 6 6 0.02% 0.02%
D 38473 25698 218 218 0.57% 0.85%

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 12 189 727088 1183.82 3024 2959 611.7
A 1 162 81702 128.73 3024 2959 611.7
A 0 23 56155 86.97 3024 2959 611.7
B 4 239 2611182 4636.75 2983 2907 562.5
B 0 230 257825 453.17 2983 2907 562.5
B 5 32 161056 281.14 2983 2907 562.5
C 15 208 67390 95.8 2929 2940 672.7
C 13 61 21511 27.61 2929 2940 672.7
C 8 128 20812 26.57 2929 2940 672.7
D 1 52 1633393 2354.59 2892 2807 692.5
D 8 195 332749 476.44 2892 2807 692.5
D 10 157 180761 256.97 2892 2807 692.5

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