ASTROSAT CZTI

Data Quality Report

Orbit 25942

Creation date: 2024-06-27T19:23:06.355683
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/AS1A07_068T01_9000003760_25942cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25942cztM0_level2_quad_clean.evt
Size (bytes)593,830,08093,856,320
Size566.3 MB 89.5 MB
Events in quadrant A4,308,764584,421
Events in quadrant B3,297,192644,597
Events in quadrant C3,216,198612,845
Events in quadrant D6,698,710523,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173010
B0142050
C0140340
D0245390

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68315137.509881%
B6832330.483021%
C6832520.761124%
D6832107815.778689%

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 7486 6832 488 488 6.52% 7.14%
B 7487 6833 3 3 0.04% 0.04%
C 7487 6833 0 0 0.00% 0.00%
D 7487 6833 921 921 12.30% 13.48%

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 0 13 1283000 8105.85 784 767 158.2
A 13 254 9566 55.62 784 767 158.2
A 3 137 7324 41.45 784 767 158.2
B 15 33 39128 243.04 822 802 157.7
B 0 190 20667 125.97 822 802 157.7
B 12 111 19227 116.84 822 802 157.7
C 14 238 126175 678.39 786 790 184.8
C 3 233 21182 110.33 786 790 184.8
C 13 61 5629 26.18 786 790 184.8
D 1 52 3871538 22175.11 724 705 174.6
D 12 233 59607 337.44 724 705 174.6
D 2 234 25961 144.69 724 705 174.6

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