ASTROSAT CZTI

Data Quality Report

Orbit 30855

Creation date: 2024-06-27T20:20:25.391185
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/AS1A10_071T46_9000004460_30855cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30855cztM0_level2_quad_clean.evt
Size (bytes)1,269,774,720163,091,520
Size1.2 GB 155.5 MB
Events in quadrant A6,253,2591,054,908
Events in quadrant B16,484,233994,192
Events in quadrant C6,955,7431,001,040
Events in quadrant D7,883,890987,523

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270593
B0580553
C0291153
D0318003

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130351951.495972%
B13035206715.857307%
C130354033.091676%
D130353912.999616%

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 15075 13035 0 0 0.00% 0.00%
B 15075 13035 592 592 3.93% 4.54%
C 15075 13035 38 38 0.25% 0.29%
D 15075 13035 238 238 1.58% 1.83%

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 13 254 24330 69.94 1618 1582 325.3
A 3 137 16895 47.08 1618 1582 325.3
A 0 226 13525 36.72 1618 1582 325.3
B 6 36 6524514 21960.0 1540 1497 297.0
B 6 159 3622774 12191.18 1540 1497 297.0
B 5 172 53633 175.52 1540 1497 297.0
C 2 16 332059 906.76 1540 1548 364.5
C 0 10 286992 783.12 1540 1548 364.5
C 14 238 245420 669.07 1540 1548 364.5
D 8 195 1118993 3034.14 1550 1513 368.3
D 1 52 600605 1626.63 1550 1513 368.3
D 2 250 79009 210.41 1550 1513 368.3

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