ASTROSAT CZTI

Data Quality Report

Orbit 18877

Creation date: 2024-06-27T17:56:00.809385
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/AS1A06_003T07_9000002818_18877cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18877cztM0_level2_quad_clean.evt
Size (bytes)151,153,92017,968,320
Size144.2 MB 17.1 MB
Events in quadrant A1,056,127107,934
Events in quadrant B893,847111,586
Events in quadrant C799,921103,963
Events in quadrant D1,714,45299,692

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041132
B036222
C033492
D061722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1629724.419890%
B1629221.350522%
C1629221.350522%
D162932119.705341%

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 1644 1630 30 30 1.82% 1.84%
B 1644 1630 2 2 0.12% 0.12%
C 1644 1630 0 0 0.00% 0.00%
D 1644 1630 232 232 14.11% 14.23%

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 6 16 256094 5850.96 206 201 43.7
A 15 174 3255 69.83 206 201 43.7
A 13 254 1871 38.18 206 201 43.7
B 7 220 49090 1191.19 204 200 41.0
B 0 189 27310 660.53 204 200 41.0
B 0 198 5157 120.78 204 200 41.0
C 14 238 30796 659.65 193 193 46.4
C 3 233 12028 255.11 193 193 46.4
C 5 112 2411 47.81 193 193 46.4
D 12 1 607342 13066.93 183 177 46.5
D 1 52 245677 5283.46 183 177 46.5
D 7 238 77075 1654.94 183 177 46.5

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