ASTROSAT CZTI

Data Quality Report

Orbit 19890

Creation date: 2024-06-27T18:08:22.847554
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/AS1T03_118T01_9000002962_19890cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19890cztM0_level2_quad_clean.evt
Size (bytes)471,458,880102,913,920
Size449.6 MB 98.1 MB
Events in quadrant A3,231,207674,285
Events in quadrant B3,363,462685,325
Events in quadrant C3,775,420655,283
Events in quadrant D3,460,181642,151

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138122
B0141082
C0153792
D0146612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6600420.636364%
B6601881.333131%
C66011372.075443%
D6601691.045296%

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 8930 6602 0 0 0.00% 0.00%
B 8931 6603 13 13 0.15% 0.20%
C 8931 6601 4 4 0.04% 0.06%
D 8931 6602 49 49 0.55% 0.74%

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 0 226 6987 36.47 839 822 169.0
A 3 137 6700 34.77 839 822 169.0
A 12 194 6001 30.64 839 822 169.0
B 3 64 40377 246.46 840 819 160.5
B 12 111 19367 115.56 840 819 160.5
B 11 111 17200 102.06 840 819 160.5
C 9 221 462802 2406.81 817 823 191.9
C 14 238 127749 661.26 817 823 191.9
C 13 61 5582 24.79 817 823 191.9
D 1 52 179968 892.62 822 798 200.7
D 5 222 152541 755.98 822 798 200.7
D 2 234 26004 125.58 822 798 200.7

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