ASTROSAT CZTI

Data Quality Report

Orbit 36937

Creation date: 2024-06-27T21:33:22.039359
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/AS1A11_024T01_9000005250_36937cztM0_level2.evt modeM0/AS1A11_024T01_9000005250_36937cztM0_level2_quad_clean.evt
Size (bytes)137,082,24017,781,120
Size130.7 MB 17.0 MB
Events in quadrant A792,287115,898
Events in quadrant B1,410,011100,153
Events in quadrant C875,134109,068
Events in quadrant D977,101109,134

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032312
B050681
C033931
D038181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138750.360490%
B138735425.522711%
C1387654.686373%
D1387443.172314%

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 3090 1388 0 0 0.00% 0.00%
B 3090 1387 261 261 8.45% 18.82%
C 3090 1388 52 52 1.68% 3.75%
D 3090 1388 36 36 1.17% 2.59%

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 10 83 86462 2237.41 179 175 38.6
A 15 174 6096 153.53 179 175 38.6
A 13 6 2164 51.57 179 175 38.6
B 0 229 441158 14524.54 149 145 30.4
B 5 172 360034 11852.76 149 145 30.4
B 0 190 5085 162.7 149 145 30.4
C 0 10 151892 3705.67 169 171 40.9
C 15 214 61228 1491.27 169 171 40.9
C 15 159 2380 53.95 169 171 40.9
D 12 17 161694 3625.04 172 167 44.6
D 12 218 41964 938.02 172 167 44.6
D 13 249 28490 635.63 172 167 44.6

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