ASTROSAT CZTI

Data Quality Report

Orbit 05821

Creation date: 2024-06-27T14:59:48.977823
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/AS1G06_168T07_9000000750_05821cztM0_level2.evt modeM0/AS1G06_168T07_9000000750_05821cztM0_level2_quad_clean.evt
Size (bytes)549,938,88098,599,680
Size524.5 MB 94.0 MB
Events in quadrant A4,727,776594,013
Events in quadrant B3,858,862602,856
Events in quadrant C3,694,938610,870
Events in quadrant D3,797,057588,616

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197491
B0172341
C0171491
D0175701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8488710.836475%
B8488510.600848%
C8488390.459472%
D8488510.600848%

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 9618 8489 17 17 0.18% 0.20%
B 9618 8489 1 1 0.01% 0.01%
C 9618 8489 0 0 0.00% 0.00%
D 9618 8489 16 16 0.17% 0.19%

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 15 236 917192 4712.32 959 936 194.4
A 15 223 103051 525.18 959 936 194.4
A 15 174 10835 50.91 959 936 194.4
B 15 204 66227 355.63 971 947 183.6
B 12 111 16899 86.9 971 947 183.6
B 4 81 16678 85.7 971 947 183.6
C 9 16 13989 60.59 941 945 215.3
C 13 61 7534 30.6 941 945 215.3
C 8 222 3114 10.07 941 945 215.3
D 1 239 48841 208.46 942 916 229.9
D 2 206 46889 199.97 942 916 229.9
D 11 241 46075 196.43 942 916 229.9

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