ASTROSAT CZTI

Data Quality Report

Orbit 35466

Creation date: 2022-04-21T02:05:18.854430
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/AS1A11_095T06_9000005078_35466cztM0_level2.evt modeM0/AS1A11_095T06_9000005078_35466cztM0_level2_quad_clean.evt
Size (bytes)680,875,20089,153,280
Size649.3 MB 85.0 MB
Events in quadrant A4,462,715533,996
Events in quadrant B4,592,307548,506
Events in quadrant C5,476,629514,227
Events in quadrant D5,489,782488,674

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183613
B0186742
C0214912
D0221352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8852120.135563%
B8852590.666516%
C88521882.123814%
D88521521.717126%

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 13128 8854 0 0 0.00% 0.00%
B 13128 8854 22 22 0.17% 0.25%
C 13128 8854 145 145 1.10% 1.64%
D 13128 8854 135 135 1.03% 1.52%

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 169323 763.31 1103 1085 220.4
A 13 6 24775 107.48 1103 1085 220.4
A 13 254 13717 57.31 1103 1085 220.4
B 5 172 108597 515.34 1101 1076 208.6
B 5 236 72182 340.81 1101 1076 208.6
B 12 111 25886 118.91 1101 1076 208.6
C 0 10 494399 2022.5 1055 1063 243.9
C 0 207 491933 2012.39 1055 1063 243.9
C 15 214 362848 1483.19 1055 1063 243.9
D 7 80 631355 2484.11 1045 1020 253.7
D 8 195 329262 1293.58 1045 1020 253.7
D 13 249 154653 605.46 1045 1020 253.7

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