ASTROSAT CZTI

Data Quality Report

Orbit 36275

Creation date: 2022-06-14T10:28:14.375952
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_071T35_9000005184_36275cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36275cztM0_level2_quad_clean.evt
Size (bytes)456,413,76060,871,680
Size435.3 MB 58.1 MB
Events in quadrant A2,536,683391,738
Events in quadrant B3,675,737393,858
Events in quadrant C2,764,302380,801
Events in quadrant D4,514,846334,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104753
B0140832
C0109912
D0165662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487350.102606%
B48733487.141391%
C4873861.764827%
D487351310.527396%

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 6966 4874 3 3 0.04% 0.06%
B 6966 4874 267 267 3.83% 5.48%
C 6966 4874 83 83 1.19% 1.70%
D 6966 4874 528 528 7.58% 10.83%

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 173859 1425.56 603 593 121.5
A 13 6 16999 134.98 603 593 121.5
A 13 254 8156 62.22 603 593 121.5
B 5 172 818568 7394.8 588 573 110.6
B 5 236 387135 3494.58 588 573 110.6
B 0 213 61947 554.83 588 573 110.6
C 0 10 277230 2032.45 584 590 136.1
C 15 214 206023 1509.3 584 590 136.1
C 13 61 3995 25.02 584 590 136.1
D 12 227 1320483 9608.2 560 547 137.4
D 12 6 648479 4716.49 560 547 137.4
D 13 249 99193 718.07 560 547 137.4

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