ASTROSAT CZTI

Data Quality Report

Orbit 27898

Creation date: 2024-06-27T19:45:45.368577
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_048T06_9000004030_27898cztM0_level2.evt modeM0/AS1A10_048T06_9000004030_27898cztM0_level2_quad_clean.evt
Size (bytes)688,132,800103,538,880
Size656.3 MB 98.7 MB
Events in quadrant A3,561,315693,124
Events in quadrant B3,753,176699,629
Events in quadrant C3,849,832655,314
Events in quadrant D9,159,993556,775

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156360
B0161140
C0163160
D0326160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7615550.722259%
B7616901.181723%
C76161902.494748%
D7616150619.774160%

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 7815 7616 1 1 0.01% 0.01%
B 7816 7618 6 6 0.08% 0.08%
C 7816 7618 1 1 0.01% 0.01%
D 7816 7617 1217 1217 15.57% 15.98%

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 12410 62.65 918 899 183.7
A 3 137 8985 44.01 918 899 183.7
A 0 226 7755 37.31 918 899 183.7
B 10 245 87121 488.82 917 892 176.4
B 12 111 21986 119.58 917 892 176.4
B 0 189 19564 105.85 917 892 176.4
C 3 233 249068 1205.11 872 873 206.0
C 14 238 157226 759.17 872 873 206.0
C 14 94 24332 113.91 872 873 206.0
D 1 52 2710423 13995.18 797 772 193.6
D 13 104 1576553 8138.81 797 772 193.6
D 7 238 872551 4502.69 797 772 193.6

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