ASTROSAT CZTI

Data Quality Report

Orbit 21941

Creation date: 2024-06-27T18:34:15.829526
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/AS1A07_007T02_9000003244_21941cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21941cztM0_level2_quad_clean.evt
Size (bytes)553,763,52096,264,000
Size528.1 MB 91.8 MB
Events in quadrant A3,672,126621,469
Events in quadrant B4,163,904622,071
Events in quadrant C3,661,540603,187
Events in quadrant D4,800,541582,865

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154172
B0169022
C0152532
D0192082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69691321.894102%
B69702623.758967%
C69701602.295552%
D69701862.668580%

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 9229 6969 0 0 0.00% 0.00%
B 9230 6970 99 99 1.07% 1.42%
C 9230 6970 0 0 0.00% 0.00%
D 9230 6970 79 79 0.86% 1.13%

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 10196 48.71 951 933 190.2
A 0 226 8181 38.12 951 933 190.2
A 3 137 7504 34.56 951 933 190.2
B 3 64 411357 2353.94 927 906 174.4
B 0 230 47693 268.32 927 906 174.4
B 4 216 43502 244.29 927 906 174.4
C 14 238 143799 686.85 900 907 208.0
C 10 22 7577 32.06 900 907 208.0
C 13 61 6111 25.01 900 907 208.0
D 12 235 810712 3691.79 914 888 219.4
D 1 52 407131 1851.96 914 888 219.4
D 11 176 109043 493.05 914 888 219.4

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