ASTROSAT CZTI

Data Quality Report

Orbit 18043

Creation date: 2024-06-27T17:44:16.592030
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/AS1A05_101T02_9000002680_18043cztM0_level2.evt modeM0/AS1A05_101T02_9000002680_18043cztM0_level2_quad_clean.evt
Size (bytes)903,432,960138,588,480
Size861.6 MB 132.2 MB
Events in quadrant A5,393,609864,806
Events in quadrant B5,532,456885,624
Events in quadrant C5,562,030856,127
Events in quadrant D10,082,639782,743

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238822
B0240162
C0238802
D0378132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11679800.684990%
B116791130.967549%
C116791411.207295%
D11679118110.112167%

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 13064 11681 5 5 0.04% 0.04%
B 13064 11681 6 6 0.05% 0.05%
C 13064 11681 0 0 0.00% 0.00%
D 13064 11681 992 992 7.59% 8.49%

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 15 174 51005 178.92 1380 1348 277.5
A 4 2 39099 136.02 1380 1348 277.5
A 0 226 11930 38.13 1380 1348 277.5
B 0 197 61144 225.52 1383 1347 265.2
B 12 111 31157 112.43 1383 1347 265.2
B 11 111 26746 95.79 1383 1347 265.2
C 14 238 208143 658.3 1331 1336 314.2
C 3 233 84333 264.19 1331 1336 314.2
C 8 208 71785 224.25 1331 1336 314.2
D 7 238 3342325 10577.46 1297 1259 315.9
D 1 52 778208 2459.74 1297 1259 315.9
D 11 176 725125 2291.68 1297 1259 315.9

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