ASTROSAT CZTI

Data Quality Report

Orbit 23927

Creation date: 2024-06-27T19:00:08.370158
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_142T01_9000003540_23927cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23927cztM0_level2_quad_clean.evt
Size (bytes)613,863,36068,875,200
Size585.4 MB 65.7 MB
Events in quadrant A3,545,323431,055
Events in quadrant B3,611,407435,307
Events in quadrant C4,999,506384,274
Events in quadrant D6,009,303395,645

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145021
B0147181
C0191211
D0222501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6297981.556297%
B62971171.858028%
C62976169.782436%
D62966259.926938%

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 7637 6298 0 0 0.00% 0.00%
B 7637 6298 6 6 0.08% 0.10%
C 7637 6297 341 341 4.47% 5.42%
D 7636 6297 437 437 5.72% 6.94%

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 2 250 20452 108.67 915 901 179.9
A 13 254 10381 52.69 915 901 179.9
A 0 226 7989 39.4 915 901 179.9
B 5 172 24045 138.18 901 885 167.6
B 0 189 23253 133.46 901 885 167.6
B 0 219 21748 124.48 901 885 167.6
C 10 9 1406473 7499.67 815 822 187.4
C 7 247 187724 997.19 815 822 187.4
C 14 238 132076 700.29 815 822 187.4
D 12 218 1500820 7476.61 843 818 200.6
D 8 195 626400 3118.15 843 818 200.6
D 1 52 558286 2778.65 843 818 200.6

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