ASTROSAT CZTI

Data Quality Report

Orbit 16173

Creation date: 2024-06-27T17:18:57.118457
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/AS1T02_109T01_9000002386_16173cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16173cztM0_level2_quad_clean.evt
Size (bytes)1,444,406,400231,232,320
Size1.3 GB 220.5 MB
Events in quadrant A11,915,9481,403,426
Events in quadrant B9,067,0231,509,150
Events in quadrant C9,776,0871,446,067
Events in quadrant D11,768,1791,402,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0478115
B0388424
C0405774
D0476844

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1802214978.306514%
B180222351.303962%
C180224482.485851%
D180228634.788592%

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 19263 18027 1119 1119 5.81% 6.21%
B 19263 18027 16 16 0.08% 0.09%
C 19263 18027 94 94 0.49% 0.52%
D 19263 18027 702 702 3.64% 3.89%

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 3882692 9177.32 2082 2037 422.9
A 0 253 31287 69.17 2082 2037 422.9
A 0 226 18390 38.67 2082 2037 422.9
B 0 244 232172 562.4 2162 2110 409.1
B 4 216 72426 171.89 2162 2110 409.1
B 0 189 69644 165.09 2162 2110 409.1
C 3 233 1158477 2404.23 2065 2075 481.0
C 14 238 315989 652.65 2065 2075 481.0
C 7 247 171844 352.96 2065 2075 481.0
D 1 52 2551268 5022.33 2071 2011 507.6
D 2 33 1081766 2127.24 2071 2011 507.6
D 15 0 90135 173.61 2071 2011 507.6

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