ASTROSAT CZTI

Data Quality Report

Orbit 17740

Creation date: 2024-06-27T17:40:17.418270
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/AS1T03_070T03_9000002636_17740cztM0_level2.evt modeM0/AS1T03_070T03_9000002636_17740cztM0_level2_quad_clean.evt
Size (bytes)268,896,96042,744,960
Size256.4 MB 40.8 MB
Events in quadrant A1,917,339256,875
Events in quadrant B1,946,872258,667
Events in quadrant C1,959,710246,922
Events in quadrant D2,044,292247,310

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083621
B083931
C083461
D088051

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4029330.819062%
B4029461.141723%
C4029441.092082%
D4029441.092082%

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 4964 4029 2 2 0.04% 0.05%
B 4964 4030 3 3 0.06% 0.07%
C 4964 4030 0 0 0.00% 0.00%
D 4964 4030 15 15 0.30% 0.37%

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 23881 233.19 486 475 100.4
A 15 191 22371 218.14 486 475 100.4
A 0 226 4246 37.57 486 475 100.4
B 0 197 22315 226.75 487 474 96.3
B 12 111 11336 112.77 487 474 96.3
B 11 111 9867 97.51 487 474 96.3
C 14 238 71013 628.91 470 474 112.2
C 5 218 39707 349.79 470 474 112.2
C 9 160 5355 43.52 470 474 112.2
D 1 52 209215 1769.93 475 460 117.9
D 2 234 17373 143.4 475 460 117.9
D 7 238 11598 94.43 475 460 117.9

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