ASTROSAT CZTI

Data Quality Report

Orbit 46468

Creation date: 2024-06-27T23:23:30.637861
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/AS1T05_203T01_9000006214_46468cztM0_level2.fits modeM0/AS1T05_203T01_9000006214_46468cztM0_level2_quad_clean.evt
Size (bytes)987,192,000213,189,120
Size941.5 MB 203.3 MB
Events in quadrant A13,838,7471,404,513
Events in quadrant B6,665,7841,479,617
Events in quadrant C6,927,7601,394,534
Events in quadrant D8,059,6241,236,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0504422
B0292792
C0305922
D0338282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A135906254.598970%
B135892111.552726%
C135902101.545254%
D135905484.032377%

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 14570 13593 156 156 1.07% 1.15%
B 14569 13592 66 66 0.45% 0.49%
C 14570 13593 197 197 1.35% 1.45%
D 14570 13593 432 432 2.96% 3.18%

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 10 83 6320052 20044.91 1522 1489 315.2
A 0 247 1057890 3351.31 1522 1489 315.2
A 2 79 336607 1063.12 1522 1489 315.2
B 5 172 251064 828.69 1527 1478 301.2
B 8 234 74010 240.82 1527 1478 301.2
B 0 190 58835 190.44 1527 1478 301.2
C 14 254 918133 2602.76 1488 1495 352.2
C 12 2 113045 316.74 1488 1495 352.2
C 3 233 67732 188.08 1488 1495 352.2
D 13 249 1115116 2994.19 1467 1422 372.0
D 4 223 306558 820.36 1467 1422 372.0
D 2 249 172179 459.08 1467 1422 372.0

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