ASTROSAT CZTI

Data Quality Report

Orbit 23819

Creation date: 2024-06-27T18:59:03.826344
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/AS1A07_113T01_9000003526_23819cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23819cztM0_level2_quad_clean.evt
Size (bytes)1,993,213,440233,812,800
Size1.9 GB 223.0 MB
Events in quadrant A8,641,7961,522,569
Events in quadrant B9,910,8751,560,366
Events in quadrant C8,879,1871,512,963
Events in quadrant D31,685,8591,206,867

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376533
B0410363
C0380523
D010701010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185381620.873881%
B185383742.017478%
C185382561.380947%
D18537787742.493392%

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 20298 18538 0 0 0.00% 0.00%
B 20298 18538 152 152 0.75% 0.82%
C 20298 18538 13 13 0.06% 0.07%
D 20296 18536 7100 7100 34.98% 38.30%

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 29439 60.35 2238 2187 451.6
A 3 137 20140 39.76 2238 2187 451.6
A 0 226 19311 37.92 2238 2187 451.6
B 3 64 1099732 2574.29 2226 2173 426.4
B 12 111 52157 117.24 2226 2173 426.4
B 11 111 46040 102.89 2226 2173 426.4
C 14 238 341924 670.43 2158 2173 506.8
C 0 10 74064 141.86 2158 2173 506.8
C 7 247 49465 93.32 2158 2173 506.8
D 13 174 17761101 39547.61 1835 1781 449.1
D 8 195 5718864 12731.17 1835 1781 449.1
D 1 52 1169355 2600.03 1835 1781 449.1

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