ASTROSAT CZTI

Data Quality Report

Orbit 11089

Creation date: 2024-06-27T16:08:09.518486
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/AS1G08_071T02_9000001620_11089cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11089cztM0_level2_quad_clean.evt
Size (bytes)539,403,84067,582,080
Size514.4 MB 64.5 MB
Events in quadrant A3,231,657404,580
Events in quadrant B4,979,064397,779
Events in quadrant C3,105,623403,357
Events in quadrant D4,574,950383,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136654
B0190433
C0135623
D0179013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6556831.266016%
B65564987.596095%
C6556610.930445%
D65565047.687614%

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 7571 6557 0 0 0.00% 0.00%
B 7571 6558 243 243 3.21% 3.71%
C 7571 6558 0 0 0.00% 0.00%
D 7571 6557 413 413 5.46% 6.30%

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 48901 286.35 820 803 168.0
A 15 174 12369 68.86 820 803 168.0
A 11 29 9120 49.51 820 803 168.0
B 4 239 1579764 10222.45 809 789 154.5
B 10 16 145173 934.76 809 789 154.5
B 15 204 44011 279.82 809 789 154.5
C 13 61 5890 27.5 795 800 185.1
C 12 4 3328 13.66 795 800 185.1
C 8 222 2058 6.8 795 800 185.1
D 10 253 1047223 5683.06 759 739 184.1
D 1 52 218254 1181.24 759 739 184.1
D 4 95 150038 810.79 759 739 184.1

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