ASTROSAT CZTI

Data Quality Report

Orbit 08439

Creation date: 2024-06-27T15:30:07.783299
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/AS1C02_028T01_9000001146_08439cztM0_level2.evt modeM0/AS1C02_028T01_9000001146_08439cztM0_level2_quad_clean.evt
Size (bytes)414,290,88061,804,800
Size395.1 MB 58.9 MB
Events in quadrant A2,463,193387,437
Events in quadrant B2,670,689393,791
Events in quadrant C2,322,806386,852
Events in quadrant D4,764,140366,711

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103431
B0108591
C0100641
D0173071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47921392.900668%
B47921222.545910%
C4792811.690317%
D479276015.859766%

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 5997 4792 4 4 0.07% 0.08%
B 5997 4792 3 3 0.05% 0.06%
C 5997 4793 4 4 0.07% 0.08%
D 5997 4793 529 529 8.82% 11.04%

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 14 111 94675 763.74 608 597 123.2
A 13 251 9232 70.1 608 597 123.2
A 15 223 6550 48.33 608 597 123.2
B 0 214 131762 1146.31 605 591 114.4
B 11 51 104165 905.14 605 591 114.4
B 5 255 51704 446.68 605 591 114.4
C 13 255 12529 87.49 591 593 136.4
C 13 61 6406 42.61 591 593 136.4
C 8 222 3821 23.66 591 593 136.4
D 2 152 2373784 16909.03 573 556 140.4
D 1 7 87045 616.23 573 556 140.4
D 12 233 64102 452.76 573 556 140.4

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