ASTROSAT CZTI

Data Quality Report

Orbit 06825

Creation date: 2024-06-27T15:12:03.955943
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/AS1A02_174T04_9000000938_06825cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06825cztM0_level2_quad_clean.evt
Size (bytes)1,829,684,160144,184,320
Size1.7 GB 137.5 MB
Events in quadrant A12,821,409631,071
Events in quadrant B12,988,180640,468
Events in quadrant C12,918,254628,879
Events in quadrant D14,855,340603,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0566078
B0572137
C0570417
D06266211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05580
B05580
C05580
D05580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A270513281.212524%
B270514681.730065%
C270512500.924180%
D270505021.855823%

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 41017 27059 4 4 0.01% 0.01%
B 41017 27059 30 30 0.07% 0.11%
C 41017 27059 29 29 0.07% 0.11%
D 41017 27058 202 202 0.49% 0.75%

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 8 15 506794 775.41 3179 3109 649.6
A 13 248 44298 63.41 3179 3109 649.6
A 13 251 38283 54.15 3179 3109 649.6
B 0 228 127183 202.16 3205 3124 613.7
B 15 204 121856 193.48 3205 3124 613.7
B 0 214 100799 159.17 3205 3124 613.7
C 9 247 401522 559.18 3085 3097 712.5
C 12 16 360399 501.47 3085 3097 712.5
C 3 9 41796 54.31 3085 3097 712.5
D 8 195 1537521 2040.29 3073 2976 752.1
D 14 34 656193 868.5 3073 2976 752.1
D 2 136 483440 638.81 3073 2976 752.1

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