ASTROSAT CZTI

Data Quality Report

Orbit 30921

Creation date: 2024-06-27T20:21:12.537196
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/AS1C06_007T01_9000004470_30921cztM0_level2.evt modeM0/AS1C06_007T01_9000004470_30921cztM0_level2_quad_clean.evt
Size (bytes)654,690,24067,461,120
Size624.4 MB 64.3 MB
Events in quadrant A3,139,837427,617
Events in quadrant B5,637,674422,875
Events in quadrant C3,712,369380,589
Events in quadrant D6,902,916362,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132311
B0209171
C0149941
D0247961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6416901.402743%
B64172303.584229%
C641769010.752688%
D6417135521.115786%

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 7326 6416 0 0 0.00% 0.00%
B 7327 6417 35 35 0.48% 0.55%
C 7327 6417 16 16 0.22% 0.25%
D 7327 6417 1203 1203 16.42% 18.75%

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 13 254 11485 65.68 814 797 162.7
A 3 137 8024 44.41 814 797 162.7
A 0 226 6842 37.15 814 797 162.7
B 6 159 1836356 12076.77 804 784 152.0
B 6 36 442651 2907.17 804 784 152.0
B 0 190 63133 410.21 804 784 152.0
C 14 238 284343 1638.3 741 746 173.1
C 14 254 234417 1349.89 741 746 173.1
C 3 233 164050 943.39 741 746 173.1
D 13 174 2171104 12852.65 712 695 168.9
D 12 218 1134949 6716.79 712 695 168.9
D 8 195 423264 2502.35 712 695 168.9

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