ASTROSAT CZTI

Data Quality Report

Orbit 27973

Creation date: 2024-06-27T19:46:37.907093
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/AS1A10_065T03_9000004040_27973cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27973cztM0_level2_quad_clean.evt
Size (bytes)960,868,800181,474,560
Size916.4 MB 173.1 MB
Events in quadrant A6,401,3611,188,322
Events in quadrant B6,505,6491,165,881
Events in quadrant C6,469,4701,096,339
Events in quadrant D8,817,6551,120,247

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275220
B0277180
C0275860
D0350610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13394790.589816%
B133951481.104890%
C133951881.403509%
D133951571.172079%

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 14834 13395 0 0 0.00% 0.00%
B 14835 13395 6 6 0.04% 0.04%
C 14835 13395 12 12 0.08% 0.09%
D 14835 13396 71 71 0.48% 0.53%

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 20174 55.86 1651 1619 332.2
A 8 192 17969 49.22 1651 1619 332.2
A 3 137 16627 45.18 1651 1619 332.2
B 10 245 65610 202.05 1629 1582 316.9
B 12 111 40529 122.9 1629 1582 316.9
B 11 111 36963 111.65 1629 1582 316.9
C 14 238 250633 675.95 1571 1581 368.5
C 2 16 74570 198.1 1571 1581 368.5
C 3 233 21414 53.83 1571 1581 368.5
D 8 195 1557393 4112.15 1595 1555 378.4
D 1 52 659990 1740.27 1595 1555 378.4
D 7 80 563209 1484.48 1595 1555 378.4

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