ASTROSAT CZTI

Data Quality Report

Orbit 11892

Creation date: 2024-06-27T16:19:49.729112
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/AS1G08_083T04_9000001760_11892cztM0_level2.evt modeM0/AS1G08_083T04_9000001760_11892cztM0_level2_quad_clean.evt
Size (bytes)891,771,840161,208,000
Size850.5 MB 153.7 MB
Events in quadrant A6,331,2991,027,326
Events in quadrant B7,667,9051,017,141
Events in quadrant C5,047,4101,052,947
Events in quadrant D7,191,557997,905

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261583
B0302622
C0230612
D0285572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113663112.736231%
B113665384.733415%
C11366730.642266%
D113663653.211332%

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 12902 11369 167 167 1.29% 1.47%
B 12902 11369 291 291 2.26% 2.56%
C 12902 11369 0 0 0.00% 0.00%
D 12902 11369 241 241 1.87% 2.12%

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 7 144 648338 2394.18 1313 1281 270.3
A 1 162 182534 670.66 1313 1281 270.3
A 8 15 122015 446.73 1313 1281 270.3
B 4 239 1453870 5852.38 1303 1268 248.2
B 3 64 446888 1795.36 1303 1268 248.2
B 15 204 274414 1100.48 1303 1268 248.2
C 13 61 9590 27.5 1294 1300 301.4
C 3 202 3283 6.58 1294 1300 301.4
C 12 4 3203 6.31 1294 1300 301.4
D 1 52 952809 2857.83 1270 1246 333.0
D 8 195 704244 2111.32 1270 1246 333.0
D 7 71 168103 501.12 1270 1246 333.0

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