ASTROSAT CZTI

Data Quality Report

Orbit 12847

Creation date: 2024-06-27T16:33:04.843898
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_071T01_9000001888_12847cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12847cztM0_level2_quad_clean.evt
Size (bytes)524,600,640107,161,920
Size500.3 MB 102.2 MB
Events in quadrant A3,446,228686,779
Events in quadrant B4,526,399681,450
Events in quadrant C3,386,824692,120
Events in quadrant D4,016,126660,501

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153723
B0183952
C0154232
D0173682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7534330.438014%
B75344025.335811%
C7534250.331829%
D7534670.889302%

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 9110 7537 0 0 0.00% 0.00%
B 9110 7537 220 220 2.41% 2.92%
C 9110 7537 6 6 0.07% 0.08%
D 9110 7537 45 45 0.49% 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 12 189 45247 246.8 882 862 179.8
A 0 226 7712 38.09 882 862 179.8
A 8 15 7120 34.8 882 862 179.8
B 4 239 852445 5154.64 860 839 165.2
B 0 85 140369 844.55 860 839 165.2
B 0 219 55704 332.09 860 839 165.2
C 14 234 48293 238.74 856 860 198.7
C 13 61 6219 26.97 856 860 198.7
C 3 202 2024 5.86 856 860 198.7
D 1 52 426805 2080.58 848 822 204.7
D 13 172 275326 1340.73 848 822 204.7
D 2 136 39370 188.28 848 822 204.7

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