ASTROSAT CZTI

Data Quality Report

Orbit 13411

Creation date: 2024-06-27T16:40:24.066078
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/AS1A04_103T01_9000001988_13411cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13411cztM0_level2_quad_clean.evt
Size (bytes)1,295,936,640246,127,680
Size1.2 GB 234.7 MB
Events in quadrant A8,795,9571,547,350
Events in quadrant B9,164,9401,583,209
Events in quadrant C9,032,2541,543,572
Events in quadrant D10,957,8991,459,623

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390565
B0396424
C0392434
D0451904

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191561770.923992%
B191562541.325955%
C191561890.986636%
D191563001.566089%

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 21042 19157 4 4 0.02% 0.02%
B 21042 19157 16 16 0.08% 0.08%
C 21042 19158 2 2 0.01% 0.01%
D 21042 19158 112 112 0.53% 0.58%

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 1 162 45551 94.53 2266 2214 458.4
A 0 226 19952 38.69 2266 2214 458.4
A 12 194 17179 32.64 2266 2214 458.4
B 3 64 129031 290.36 2271 2208 436.8
B 0 214 87678 195.69 2271 2208 436.8
B 12 111 52066 114.15 2271 2208 436.8
C 3 233 279937 542.14 2217 2224 512.2
C 14 220 106687 203.93 2217 2224 512.2
C 13 61 15942 26.78 2217 2224 512.2
D 8 195 1758012 3340.81 2188 2124 525.6
D 1 52 292576 552.62 2188 2124 525.6
D 13 249 264239 498.71 2188 2124 525.6

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