ASTROSAT CZTI

Data Quality Report

Orbit 20210602_C05_008T01_9000004432_level2

Creation date: 2021-06-05T08:55:17.330704
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/AS1C05_008T01_9000004432cztM0_level2_bc.evt modeM0/AS1C05_008T01_9000004432cztM0_level2_quad_clean.evt
Size (bytes)718,922,880155,004,480
Size685.6 MB 147.8 MB
Events in quadrant A2,579,7091,015,941
Events in quadrant B5,498,7401,008,247
Events in quadrant C3,070,995975,143
Events in quadrant D9,870,607933,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237560
B0338640
C0257530
D0462220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110101000.908265%
B110102432.207084%
C110103122.833787%
D11010115710.508629%

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 12515 11008 2 2 0.02% 0.02%
B 12515 11008 2 2 0.02% 0.02%
C 12515 11008 35 35 0.28% 0.32%
D 12515 11009 223 223 1.78% 2.03%

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 341802 2711.72 572 560 125.8
A 8 192 23030 178.56 572 560 125.8
A 13 254 18918 145.88 572 560 125.8
B 6 159 3092465 27799.58 570 556 111.2
B 6 36 64713 576.84 570 556 111.2
B 5 172 45604 405.03 570 556 111.2
C 10 22 643242 4908.89 545 542 130.9
C 3 233 242373 1847.08 545 542 130.9
C 0 10 39950 300.99 545 542 130.9
D 8 195 6432651 51440.93 542 524 125.0
D 1 52 1001899 8008.5 542 524 125.0
D 10 253 164764 1313.51 542 524 125.0

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