ASTROSAT CZTI

Data Quality Report

Orbit 16694

Creation date: 2024-06-27T17:26:20.944847
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_024T01_9000002472_16694cztM0_level2.evt modeM0/AS1T03_024T01_9000002472_16694cztM0_level2_quad_clean.evt
Size (bytes)475,041,60067,357,440
Size453.0 MB 64.2 MB
Events in quadrant A3,016,449454,636
Events in quadrant B2,432,375479,679
Events in quadrant C2,399,602473,219
Events in quadrant D6,225,445308,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B021
C031
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208128810
B0166026306
C0161875924
D03497213606

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015250
B015250
C015250
D015145

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45123567.890071%
B4750691.452632%
C4822631.306512%
D4134143834.784712%

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 6563 5225 141 141 2.15% 2.70%
B 6442 5455 1 1 0.02% 0.02%
C 6928 5533 0 0 0.00% 0.00%
D 6466 4845 1103 1103 17.06% 22.77%

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 881511 8056.55 530 522 109.4
A 12 96 41952 378.87 530 522 109.4
A 15 190 33396 300.63 530 522 109.4
B 15 35 80321 707.73 581 569 112.7
B 0 229 52340 459.42 581 569 112.7
B 0 189 15417 131.76 581 569 112.7
C 14 238 86775 638.02 567 574 135.1
C 3 233 83993 617.43 567 574 135.1
C 8 128 8298 57.17 567 574 135.1
D 1 52 4392473 43970.52 402 391 99.9
D 2 16 123113 1228.61 402 391 99.9
D 5 222 107429 1071.59 402 391 99.9

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