ASTROSAT CZTI

Data Quality Report

Orbit 14912

Creation date: 2024-06-27T17:01:15.114404
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_099T01_9000002204_14912cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14912cztM0_level2_quad_clean.evt
Size (bytes)545,293,44097,254,720
Size520.0 MB 92.7 MB
Events in quadrant A3,916,654612,320
Events in quadrant B4,110,164612,729
Events in quadrant C3,939,485590,028
Events in quadrant D4,013,521583,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165533
B0170312
C0165212
D0172552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78751782.260317%
B78753194.050794%
C78751551.968254%
D78751752.222222%

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 9166 7878 0 0 0.00% 0.00%
B 9166 7878 62 62 0.68% 0.79%
C 9166 7878 1 1 0.01% 0.01%
D 9166 7878 19 19 0.21% 0.24%

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 31 26023 123.82 1000 980 202.3
A 12 189 24424 115.91 1000 980 202.3
A 4 2 17958 83.94 1000 980 202.3
B 10 16 220866 1140.65 989 964 192.8
B 12 111 23839 118.65 989 964 192.8
B 11 111 20393 100.78 989 964 192.8
C 3 233 143684 639.58 966 971 223.1
C 0 207 22022 94.34 966 971 223.1
C 13 61 6740 25.85 966 971 223.1
D 10 70 168199 726.81 966 942 230.1
D 7 254 124785 538.15 966 942 230.1
D 13 104 45419 193.27 966 942 230.1

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