ASTROSAT CZTI

Data Quality Report

Orbit 21120

Creation date: 2024-06-27T18:23:50.616531
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/AS1A05_104T05_9000003120_21120cztM0_level2.evt modeM0/AS1A05_104T05_9000003120_21120cztM0_level2_quad_clean.evt
Size (bytes)571,302,72074,612,160
Size544.8 MB 71.2 MB
Events in quadrant A3,794,217464,107
Events in quadrant B3,900,530467,021
Events in quadrant C3,319,168441,736
Events in quadrant D5,835,671420,626

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153911
B0157401
C0138481
D0219424

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6678771.153040%
B66791622.425513%
C6679671.003144%
D66783965.929919%

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 9234 6680 20 20 0.22% 0.30%
B 9235 6681 31 31 0.34% 0.46%
C 9235 6681 0 0 0.00% 0.00%
D 9234 6680 326 326 3.53% 4.88%

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 15 192 489894 2874.1 856 838 170.2
A 13 254 8271 43.68 856 838 170.2
A 0 226 7406 38.6 856 838 170.2
B 7 220 313733 1952.02 856 838 160.3
B 0 190 56796 349.1 856 838 160.3
B 0 219 54451 334.47 856 838 160.3
C 14 238 128961 670.4 818 825 191.1
C 13 61 5692 25.46 818 825 191.1
C 9 54 3195 12.4 818 825 191.1
D 1 239 1844664 9507.57 803 781 193.9
D 15 0 317452 1632.84 803 781 193.9
D 1 20 254546 1308.48 803 781 193.9

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