ASTROSAT CZTI

Data Quality Report

Orbit 23779

Creation date: 2024-06-27T18:58:37.414425
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/AS1T03_180T01_9000003524_23779cztM0_level2.evt modeM0/AS1T03_180T01_9000003524_23779cztM0_level2_quad_clean.evt
Size (bytes)486,296,64069,655,680
Size463.8 MB 66.4 MB
Events in quadrant A3,317,549422,608
Events in quadrant B3,519,173426,965
Events in quadrant C3,315,432407,665
Events in quadrant D4,137,177401,273

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139891
B0144822
C0138751
D0164971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6461480.742919%
B6461721.114379%
C6461661.021514%
D6461390.603622%

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 7631 6461 0 0 0.00% 0.00%
B 7631 6461 8 8 0.10% 0.12%
C 7631 6461 0 0 0.00% 0.00%
D 7631 6461 8 8 0.10% 0.12%

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 10859 58.59 860 844 170.9
A 0 226 7601 39.53 860 844 170.9
A 3 137 7126 36.75 860 844 170.9
B 0 189 76747 476.93 850 832 159.2
B 0 245 43424 267.58 850 832 159.2
B 3 64 35901 220.32 850 832 159.2
C 14 238 129846 686.29 815 823 188.0
C 7 247 8548 41.09 815 823 188.0
C 13 61 5655 25.7 815 823 188.0
D 8 195 746612 3696.75 835 812 201.7
D 1 52 175422 865.5 835 812 201.7
D 9 85 31751 153.36 835 812 201.7

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