ASTROSAT CZTI

Data Quality Report

Orbit 36281

Creation date: 2022-06-14T12:11:20.864739
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_36281cztM0_level2.evt modeM0/AS1A10_071T35_9000005184_36281cztM0_level2_quad_clean.evt
Size (bytes)483,266,88073,543,680
Size460.9 MB 70.1 MB
Events in quadrant A3,016,645457,184
Events in quadrant B3,486,565459,696
Events in quadrant C3,395,323452,774
Events in quadrant D4,311,908419,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128223
B0144062
C0137162
D0169942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6263100.159668%
B62631812.889989%
C6263290.463037%
D62632624.183299%

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 8887 6265 0 0 0.00% 0.00%
B 8887 6265 139 139 1.56% 2.22%
C 8887 6265 17 17 0.19% 0.27%
D 8887 6265 245 245 2.76% 3.91%

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 192363 1298.44 724 711 147.6
A 13 6 14873 95.94 724 711 147.6
A 13 254 10076 63.44 724 711 147.6
B 8 128 331153 2381.95 710 690 138.7
B 5 172 287565 2067.77 710 690 138.7
B 0 219 24517 171.74 710 690 138.7
C 15 214 261561 1570.75 704 708 166.1
C 0 207 217976 1308.3 704 708 166.1
C 0 10 139137 833.56 704 708 166.1
D 12 6 610195 3549.51 692 671 171.7
D 12 227 369469 2147.66 692 671 171.7
D 13 249 224509 1303.5 692 671 171.7

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