ASTROSAT CZTI

Data Quality Report

Orbit 16715

Creation date: 2024-06-27T17:26:36.764042
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/AS1T03_024T01_9000002472_16715cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16715cztM0_level2_quad_clean.evt
Size (bytes)710,585,28075,954,240
Size677.7 MB 72.4 MB
Events in quadrant A3,814,007480,226
Events in quadrant B4,034,883482,293
Events in quadrant C3,886,834466,042
Events in quadrant D9,334,879407,612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154433
B0161342
C0157862
D0323552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66501031.548872%
B66501612.421053%
C66501251.879699%
D6650230734.691729%

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 7811 6652 17 17 0.22% 0.26%
B 7811 6652 61 61 0.78% 0.92%
C 7811 6652 7 7 0.09% 0.11%
D 7811 6651 1559 1559 19.96% 23.44%

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 15 174 332534 1861.07 893 879 178.2
A 9 143 46579 256.44 893 879 178.2
A 0 226 8067 40.34 893 879 178.2
B 10 16 265924 1598.86 881 862 165.8
B 5 236 131667 789.02 881 862 165.8
B 15 35 70067 417.45 881 862 165.8
C 3 233 296164 1500.68 850 858 196.8
C 14 238 133389 673.49 850 858 196.8
C 0 207 117046 590.44 850 858 196.8
D 1 52 5260535 30064.81 722 705 174.9
D 5 222 710178 4055.3 722 705 174.9
D 11 176 363286 2072.49 722 705 174.9

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