ASTROSAT CZTI

Data Quality Report

Orbit 11438

Creation date: 2024-06-27T16:12:57.853426
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/AS1A04_054T02_9000001674_11438cztM0_level2.evt modeM0/AS1A04_054T02_9000001674_11438cztM0_level2_quad_clean.evt
Size (bytes)449,781,12082,146,240
Size428.9 MB 78.3 MB
Events in quadrant A3,061,560525,971
Events in quadrant B3,957,104518,248
Events in quadrant C2,868,511505,972
Events in quadrant D3,304,066495,381

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133362
B0158492
C0130392
D0142142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6327500.790264%
B63272283.603604%
C6327160.252884%
D6327600.948317%

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 7127 6328 4 4 0.06% 0.06%
B 7127 6328 109 109 1.53% 1.72%
C 7127 6328 0 0 0.00% 0.00%
D 7127 6328 38 38 0.53% 0.60%

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 9 143 39093 245.99 766 753 155.9
A 1 162 27071 168.86 766 753 155.9
A 1 178 15877 97.04 766 753 155.9
B 4 239 726191 4902.42 760 741 148.0
B 10 245 72849 487.29 760 741 148.0
B 3 189 66275 442.86 760 741 148.0
C 13 61 5260 26.26 735 740 172.1
C 8 128 3228 14.46 735 740 172.1
C 8 112 1894 6.71 735 740 172.1
D 1 52 240719 1352.87 730 709 177.4
D 13 104 85906 480.23 730 709 177.4
D 13 152 75816 423.36 730 709 177.4

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