ASTROSAT CZTI

Data Quality Report

Orbit 23219

Creation date: 2024-06-27T18:51:25.887257
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/AS1A08_008T02_9000003430_23219cztM0_level2.evt modeM0/AS1A08_008T02_9000003430_23219cztM0_level2_quad_clean.evt
Size (bytes)628,418,880114,050,880
Size599.3 MB 108.8 MB
Events in quadrant A2,983,774814,720
Events in quadrant B3,114,798835,501
Events in quadrant C4,794,931723,648
Events in quadrant D7,712,496641,129

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130432
B0133092
C0183422
D0272862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6278280.446002%
B6278390.621217%
C627863510.114686%
D6277196731.336626%

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 7473 6279 0 0 0.00% 0.00%
B 7473 6279 1 1 0.01% 0.02%
C 7473 6279 463 463 6.20% 7.37%
D 7471 6277 1815 1815 24.29% 28.92%

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 13 254 9933 59.18 773 759 155.0
A 0 226 6669 38.12 773 759 155.0
A 3 137 6622 37.82 773 759 155.0
B 0 190 33416 224.29 779 761 145.6
B 3 209 24261 161.41 779 761 145.6
B 12 111 16774 109.98 779 761 145.6
C 2 16 1641543 10147.49 699 703 161.7
C 0 10 265157 1635.47 699 703 161.7
C 14 238 113755 699.15 699 703 161.7
D 1 52 4007403 25570.39 645 625 156.7
D 7 238 317745 2023.79 645 625 156.7
D 1 239 252433 1606.98 645 625 156.7

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