ASTROSAT CZTI

Data Quality Report

Orbit 16195

Creation date: 2024-06-27T17:19:11.862634
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/AS1T02_109T01_9000002386_16195cztM0_level2.evt modeM0/AS1T02_109T01_9000002386_16195cztM0_level2_quad_clean.evt
Size (bytes)385,318,08073,589,760
Size367.5 MB 70.2 MB
Events in quadrant A2,800,921469,581
Events in quadrant B2,897,480476,019
Events in quadrant C2,816,910450,060
Events in quadrant D2,778,335446,346

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115012
B0117241
C0115731
D0116621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5516270.489485%
B5516400.725163%
C5516460.833938%
D5516370.670776%

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 6782 5518 0 0 0.00% 0.00%
B 6782 5518 5 5 0.07% 0.09%
C 6782 5518 0 0 0.00% 0.00%
D 6782 5518 7 7 0.10% 0.13%

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 15 157 14445 94.45 722 708 145.4
A 8 247 9902 63.22 722 708 145.4
A 0 226 6453 39.5 722 708 145.4
B 15 201 37513 274.08 714 698 134.3
B 0 229 28312 205.58 714 698 134.3
B 12 111 15400 109.45 714 698 134.3
C 14 238 106412 671.68 679 684 157.4
C 3 233 52904 331.75 679 684 157.4
C 7 247 9528 56.19 679 684 157.4
D 1 52 119692 703.19 697 677 169.3
D 2 234 19761 112.76 697 677 169.3
D 5 222 12480 69.74 697 677 169.3

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