ASTROSAT CZTI

Data Quality Report

Orbit 15128

Creation date: 2024-06-27T17:04:08.394320
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/AS1G08_046T09_9000002226_15128cztM0_level2.evt modeM0/AS1G08_046T09_9000002226_15128cztM0_level2_quad_clean.evt
Size (bytes)480,015,36078,108,480
Size457.8 MB 74.5 MB
Events in quadrant A3,207,919483,552
Events in quadrant B3,370,297488,293
Events in quadrant C3,690,082473,937
Events in quadrant D3,807,840446,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139193
B0141812
C0149242
D0161342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6794721.059759%
B6794991.457168%
C6794550.809538%
D67943324.886665%

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 7635 6796 1 1 0.01% 0.01%
B 7635 6795 0 0 0.00% 0.00%
C 7635 6795 0 0 0.00% 0.00%
D 7635 6795 274 274 3.59% 4.03%

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 12 189 53134 315.18 817 798 166.1
A 11 29 8474 46.22 817 798 166.1
A 0 226 7053 37.67 817 798 166.1
B 3 64 93806 597.76 820 799 155.6
B 4 173 19991 123.35 820 799 155.6
B 12 111 18336 112.71 820 799 155.6
C 3 233 564838 3081.8 793 796 183.0
C 0 207 23110 121.92 793 796 183.0
C 3 9 6174 29.38 793 796 183.0
D 2 33 775320 4128.48 770 747 187.6
D 10 70 48711 255.65 770 747 187.6
D 2 234 22675 116.88 770 747 187.6

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