ASTROSAT CZTI

Data Quality Report

Orbit 10127

Creation date: 2024-06-27T15:55:20.052064
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/AS1A03_079T02_9000001458_10127cztM0_level2.evt modeM0/AS1A03_079T02_9000001458_10127cztM0_level2_quad_clean.evt
Size (bytes)109,964,16024,324,480
Size104.9 MB 23.2 MB
Events in quadrant A829,804155,087
Events in quadrant B774,861159,038
Events in quadrant C717,842158,737
Events in quadrant D904,131153,171

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033725
B031614
C030643
D036121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1481473.173531%
B1480332.229730%
C1481151.012829%
D1482372.496626%

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 2522 1482 4 4 0.16% 0.27%
B 2522 1482 0 0 0.00% 0.00%
C 2522 1483 0 0 0.00% 0.00%
D 2522 1483 10 10 0.40% 0.67%

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 13 248 78669 1885.6 194 189 41.6
A 8 5 3269 74.0 194 189 41.6
A 0 226 1792 38.51 194 189 41.6
B 0 214 18974 477.21 192 187 39.4
B 12 111 4205 102.06 192 187 39.4
B 11 111 3380 81.1 192 187 39.4
C 13 61 1422 28.25 183 184 43.8
C 14 234 789 13.81 183 184 43.8
C 14 67 557 8.51 183 184 43.8
D 4 95 77759 1735.5 184 179 44.7
D 2 136 56790 1266.41 184 179 44.7
D 8 195 40241 896.2 184 179 44.7

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