ASTROSAT CZTI

Data Quality Report

Orbit 16065

Creation date: 2024-06-27T17:17:26.809304
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/AS1A04_230T01_9000002374_16065cztM0_level2.evt modeM0/AS1A04_230T01_9000002374_16065cztM0_level2_quad_clean.evt
Size (bytes)498,931,200112,273,920
Size475.8 MB 107.1 MB
Events in quadrant A3,565,265767,272
Events in quadrant B3,552,431762,916
Events in quadrant C3,225,080714,754
Events in quadrant D4,335,471711,194

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147912
B0145411
C0135011
D0170611

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6367821.287891%
B6367891.397833%
C6367901.413539%
D63671552.434428%

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 7618 6368 0 0 0.00% 0.00%
B 7618 6368 11 11 0.14% 0.17%
C 7618 6368 3 3 0.04% 0.05%
D 7618 6368 83 83 1.09% 1.30%

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 3 80 304928 1809.58 840 825 168.1
A 9 143 22111 126.66 840 825 168.1
A 0 226 7838 41.73 840 825 168.1
B 7 220 108808 698.71 829 811 154.6
B 0 189 63130 403.19 829 811 154.6
B 0 229 27366 171.8 829 811 154.6
C 14 238 122309 665.54 787 792 182.6
C 0 207 24868 131.86 787 792 182.6
C 3 233 9690 48.73 787 792 182.6
D 1 52 749856 3780.88 810 787 198.1
D 12 218 374203 1884.79 810 787 198.1
D 13 232 78848 394.01 810 787 198.1

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