ASTROSAT CZTI

Data Quality Report

Orbit 31681

Creation date: 2024-06-27T20:31:28.056846
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_094T13_9000004628_31681cztM0_level2.evt modeM0/AS1A10_094T13_9000004628_31681cztM0_level2_quad_clean.evt
Size (bytes)1,009,483,20097,562,880
Size962.7 MB 93.0 MB
Events in quadrant A6,214,417536,524
Events in quadrant B9,395,655533,251
Events in quadrant C6,852,976538,065
Events in quadrant D7,307,637524,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025616
B025614
C025915
D026119

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281331957
B0396082241
C0290601461
D0310841682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071
B083
C082
D061

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118773112.618506%
B118484173.519581%
C118933332.799966%
D118643322.798382%

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 16116 11937 105 105 0.65% 0.88%
B 16116 11912 94 94 0.58% 0.79%
C 16119 11959 58 58 0.36% 0.48%
D 16116 11930 226 226 1.40% 1.89%

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 0 13 830366 2961.06 1382 1352 280.0
A 4 48 36129 124.22 1382 1352 280.0
A 13 254 22291 74.79 1382 1352 280.0
B 6 159 3139464 12031.56 1365 1328 260.8
B 4 80 675910 2586.34 1365 1328 260.8
B 0 190 44092 163.96 1365 1328 260.8
C 3 233 856266 2740.41 1334 1341 312.0
C 0 10 376185 1201.54 1334 1341 312.0
C 14 238 217214 691.97 1334 1341 312.0
D 8 195 1284995 4071.8 1333 1296 315.3
D 13 249 688937 2181.15 1333 1296 315.3
D 2 250 160862 506.13 1333 1296 315.3

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