ASTROSAT CZTI

Data Quality Report

Orbit 21696

Creation date: 2024-06-27T18:31:12.104968
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_039T02_9000003212_21696cztM0_level2.evt modeM0/AS1A07_039T02_9000003212_21696cztM0_level2_quad_clean.evt
Size (bytes)537,814,080135,846,720
Size512.9 MB 129.6 MB
Events in quadrant A3,101,420925,114
Events in quadrant B3,422,296960,078
Events in quadrant C5,476,458903,517
Events in quadrant D3,852,795878,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133642
B0142542
C0208162
D0158183

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6420210.327103%
B6420691.074766%
C64202193.411215%
D6419941.464403%

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 7710 6421 0 0 0.00% 0.00%
B 7710 6421 20 20 0.26% 0.31%
C 7710 6421 18 18 0.23% 0.28%
D 7709 6420 64 64 0.83% 1.00%

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 12418 72.93 802 785 159.5
A 0 226 6976 38.81 802 785 159.5
A 3 137 6294 34.54 802 785 159.5
B 3 64 124771 830.82 815 798 149.2
B 0 229 47885 315.56 815 798 149.2
B 0 230 22009 142.15 815 798 149.2
C 8 208 2273611 12565.64 783 788 180.9
C 14 238 125772 690.99 783 788 180.9
C 10 22 12430 64.36 783 788 180.9
D 12 235 293118 1586.42 778 757 184.3
D 1 20 246279 1332.26 778 757 184.3
D 2 136 114315 616.19 778 757 184.3

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