ASTROSAT CZTI

Data Quality Report

Orbit 18001

Creation date: 2024-06-27T17:43:37.568323
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_108T02_9000002676_18001cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_18001cztM0_level2_quad_clean.evt
Size (bytes)1,891,886,400328,449,600
Size1.8 GB 313.2 MB
Events in quadrant A13,425,9722,028,894
Events in quadrant B12,969,5692,071,185
Events in quadrant C14,005,6981,998,243
Events in quadrant D15,034,4991,956,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05580
B05580
C05580
D05580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0581994
B0566964
C0585884
D0630904

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A275441600.580889%
B275442100.762416%
C275443861.401394%
D275442951.071014%

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 29394 27549 26 26 0.09% 0.09%
B 29394 27549 28 28 0.10% 0.10%
C 29394 27549 62 62 0.21% 0.23%
D 29394 27549 196 196 0.67% 0.71%

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 744014 1122.82 3270 3194 659.8
A 4 2 88277 128.96 3270 3194 659.8
A 0 226 28410 38.22 3270 3194 659.8
B 4 173 78106 120.71 3262 3177 620.7
B 12 111 76744 118.51 3262 3177 620.7
B 11 111 66239 101.59 3262 3177 620.7
C 3 233 629726 849.55 3154 3172 737.5
C 0 207 513436 691.88 3154 3172 737.5
C 14 238 485536 654.05 3154 3172 737.5
D 5 222 1548845 1824.18 3151 3084 847.4
D 11 176 1075467 1265.54 3151 3084 847.4
D 7 96 149348 172.61 3151 3084 847.4

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