ASTROSAT CZTI

Data Quality Report

Orbit 16929

Creation date: 2024-06-27T17:29:37.753788
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_013T01_9000002514_16929cztM0_level2.evt modeM0/AS1T03_013T01_9000002514_16929cztM0_level2_quad_clean.evt
Size (bytes)1,410,373,440168,402,240
Size1.3 GB 160.6 MB
Events in quadrant A9,657,0741,118,716
Events in quadrant B5,698,6921,204,218
Events in quadrant C7,001,3771,157,924
Events in quadrant D19,532,935772,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370582
B0254792
C0289612
D0664642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02480
B02480
C02480
D02480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1221811619.502374%
B12218750.613848%
C122181871.530529%
D12218602549.312490%

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 13504 12221 948 948 7.02% 7.76%
B 13504 12221 5 5 0.04% 0.04%
C 13504 12221 2 2 0.01% 0.02%
D 13504 12221 4168 4168 30.86% 34.11%

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 15 174 4558359 17210.56 1324 1297 264.8
A 0 226 11630 39.02 1324 1297 264.8
A 3 137 9776 32.02 1324 1297 264.8
B 0 189 74582 278.04 1387 1352 263.4
B 15 35 59867 222.17 1387 1352 263.4
B 0 197 41010 150.57 1387 1352 263.4
C 3 233 1598372 5185.31 1325 1336 308.0
C 14 238 205366 662.45 1325 1336 308.0
C 5 112 12137 35.07 1325 1336 308.0
D 1 52 15723635 67542.43 971 945 232.8
D 2 152 46083 193.91 971 945 232.8
D 2 234 38863 162.89 971 945 232.8

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