ASTROSAT CZTI

Data Quality Report

Orbit 14375

Creation date: 2024-06-27T16:54:13.911676
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_149T01_9000002118_14375cztM0_level2.evt modeM0/AS1A04_149T01_9000002118_14375cztM0_level2_quad_clean.evt
Size (bytes)536,996,16092,252,160
Size512.1 MB 88.0 MB
Events in quadrant A3,569,283579,545
Events in quadrant B3,845,762581,390
Events in quadrant C4,034,475576,747
Events in quadrant D4,323,046552,760

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152083
B0158952
C0160382
D0177352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72241672.311739%
B72242373.280731%
C72241742.408638%
D72244015.550941%

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 9401 7225 2 2 0.02% 0.03%
B 9401 7225 16 16 0.17% 0.22%
C 9401 7225 0 0 0.00% 0.00%
D 9401 7225 167 167 1.78% 2.31%

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 12 189 92377 505.02 900 881 181.2
A 8 15 12594 64.65 900 881 181.2
A 0 226 7865 38.55 900 881 181.2
B 0 229 149320 865.59 898 874 171.5
B 0 182 77899 449.13 898 874 171.5
B 0 189 25338 142.65 898 874 171.5
C 3 233 601310 3009.98 879 883 199.5
C 13 61 6309 27.2 879 883 199.5
C 14 234 4360 17.43 879 883 199.5
D 12 110 901392 4414.89 866 844 204.0
D 10 199 42384 203.65 866 844 204.0
D 2 120 41840 200.98 866 844 204.0

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