ASTROSAT CZTI

Data Quality Report

Orbit 27829

Creation date: 2024-06-27T19:44:55.198492
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/AS1A10_048T08_9000004020_27829cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27829cztM0_level2_quad_clean.evt
Size (bytes)1,322,536,320226,909,440
Size1.2 GB 216.4 MB
Events in quadrant A8,686,7571,429,385
Events in quadrant B8,956,9611,443,099
Events in quadrant C9,388,7731,380,860
Events in quadrant D11,770,0671,343,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377620
B0381560
C0395220
D0474310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185071830.988815%
B185062231.205015%
C185063241.750784%
D185065763.112504%

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 20432 18507 0 0 0.00% 0.00%
B 20431 18506 3 3 0.01% 0.02%
C 20431 18506 31 31 0.15% 0.17%
D 20431 18506 401 401 1.96% 2.17%

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 13 254 29521 60.0 2252 2206 455.2
A 3 137 21907 43.28 2252 2206 455.2
A 0 226 18918 36.71 2252 2206 455.2
B 0 229 60442 136.11 2235 2178 428.1
B 12 111 54296 121.75 2235 2178 428.1
B 0 190 54269 121.69 2235 2178 428.1
C 3 233 579226 1144.91 2148 2161 504.0
C 14 238 343753 677.72 2148 2161 504.0
C 2 16 65471 125.61 2148 2161 504.0
D 1 52 3309827 6332.49 2163 2098 522.3
D 2 250 170935 323.23 2163 2098 522.3
D 2 234 75243 140.03 2163 2098 522.3

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