ASTROSAT CZTI

Data Quality Report

Orbit 14773

Creation date: 2024-06-27T16:59:30.733375
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_022T06_9000002182_14773cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14773cztM0_level2_quad_clean.evt
Size (bytes)37,517,76011,761,920
Size35.8 MB 11.2 MB
Events in quadrant A281,19877,612
Events in quadrant B271,86180,107
Events in quadrant C281,93972,982
Events in quadrant D255,88474,414

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188
B0184
C0186
D0184

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01756499
B01693442
C01701514
D01707477

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62100.000000%
B62510.160000%
C59000.000000%
D60900.000000%

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 837 705 0 0 0.00% 0.00%
B 844 711 0 0 0.00% 0.00%
C 843 681 0 0 0.00% 0.00%
D 839 691 0 0 0.00% 0.00%

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 13938 856.3 69 67 16.2
A 0 226 606 33.27 69 67 16.2
A 12 194 499 26.67 69 67 16.2
B 12 111 1577 95.82 69 68 15.7
B 11 111 1236 74.17 69 68 15.7
B 14 111 1077 64.07 69 68 15.7
C 3 233 35581 2160.29 62 62 16.4
C 4 254 1930 113.61 62 62 16.4
C 13 61 465 24.51 62 62 16.4
D 9 1 8327 446.5 64 62 18.5
D 2 234 1825 95.24 64 62 18.5
D 15 0 1451 75.04 64 62 18.5

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