ASTROSAT CZTI

Data Quality Report

Orbit 23301

Creation date: 2024-06-27T18:52:31.325069
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/AS1A07_148T02_9000003444_23301cztM0_level2.evt modeM0/AS1A07_148T02_9000003444_23301cztM0_level2_quad_clean.evt
Size (bytes)731,787,840114,289,920
Size697.9 MB 109.0 MB
Events in quadrant A4,278,068733,700
Events in quadrant B4,390,836745,934
Events in quadrant C5,070,175719,418
Events in quadrant D7,840,715664,164

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178052
B0180702
C0201682
D0290172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8618610.707821%
B8618730.847064%
C86183864.478997%
D861892210.698538%

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 10693 8619 0 0 0.00% 0.00%
B 10693 8619 5 5 0.05% 0.06%
C 10693 8619 235 235 2.20% 2.73%
D 10693 8619 684 684 6.40% 7.94%

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 13 254 13106 53.89 1110 1086 223.0
A 0 226 9672 38.49 1110 1086 223.0
A 3 137 9464 37.56 1110 1086 223.0
B 0 190 52846 247.5 1100 1072 209.2
B 12 111 25095 114.84 1100 1072 209.2
B 11 111 22388 101.9 1100 1072 209.2
C 0 10 744486 3005.57 1053 1062 247.3
C 14 238 165280 663.91 1053 1062 247.3
C 7 247 28543 111.1 1053 1062 247.3
D 1 52 2926530 11607.26 1044 1016 252.0
D 7 238 889734 3526.08 1044 1016 252.0
D 2 234 32391 124.48 1044 1016 252.0

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