ASTROSAT CZTI

Data Quality Report

Orbit 05676

Creation date: 2024-06-27T14:57:52.007960
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/AS1A02_077T01_9000000732_05676cztM0_level2.evt modeM0/AS1A02_077T01_9000000732_05676cztM0_level2_quad_clean.evt
Size (bytes)144,547,20031,152,960
Size137.9 MB 29.7 MB
Events in quadrant A956,757197,101
Events in quadrant B1,213,783194,673
Events in quadrant C956,332196,740
Events in quadrant D1,093,342189,987

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046111
B051910
C045580
D050260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227600.000000%
B227630.131810%
C227600.000000%
D2276271.186292%

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 2276 2276 1 1 0.04% 0.04%
B 2276 2276 3 3 0.13% 0.13%
C 2276 2276 0 0 0.00% 0.00%
D 2276 2276 27 27 1.19% 1.19%

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 4 2 31292 625.8 235 230 49.6
A 0 31 6524 126.8 235 230 49.6
A 13 6 5959 115.42 235 230 49.6
B 15 204 190395 4024.75 237 232 47.2
B 5 172 42094 886.0 237 232 47.2
B 0 214 22259 466.2 237 232 47.2
C 1 16 75208 1389.1 225 226 54.0
C 13 61 1947 31.88 225 226 54.0
C 8 79 1474 23.12 225 226 54.0
D 2 152 142010 2440.29 225 217 58.1
D 10 15 60281 1033.72 225 217 58.1
D 8 195 21526 366.73 225 217 58.1

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