ASTROSAT CZTI

Data Quality Report

Orbit 11273

Creation date: 2024-06-27T16:10:34.883469
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/AS1A04_044T01_9000001648_11273cztM0_level2.evt modeM0/AS1A04_044T01_9000001648_11273cztM0_level2_quad_clean.evt
Size (bytes)651,386,88078,920,640
Size621.2 MB 75.3 MB
Events in quadrant A6,018,014472,348
Events in quadrant B4,355,817528,243
Events in quadrant C2,775,110514,056
Events in quadrant D6,180,731463,431

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219652
B0169411
C0121501
D0224951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A588395416.216216%
B58835008.499065%
C5883470.798912%
D588362510.623831%

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 7093 5884 622 622 8.77% 10.57%
B 7093 5884 244 244 3.44% 4.15%
C 7093 5884 0 0 0.00% 0.00%
D 7093 5884 491 491 6.92% 8.34%

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 14 238 1581611 11368.22 685 672 139.1
A 8 5 1450216 10423.39 685 672 139.1
A 8 15 125129 894.95 685 672 139.1
B 4 239 1020312 7483.04 721 708 136.3
B 3 64 242519 1774.69 721 708 136.3
B 11 51 104274 760.09 721 708 136.3
C 13 61 5137 26.86 711 714 164.6
C 12 4 2537 11.07 711 714 164.6
C 3 202 1760 6.35 711 714 164.6
D 10 234 878990 5379.84 675 657 163.3
D 12 157 572442 3502.21 675 657 163.3
D 10 253 496315 3035.93 675 657 163.3

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