ASTROSAT CZTI

Data Quality Report

Orbit 24515

Creation date: 2024-06-27T19:06:47.261281
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_183T01_9000003606_24515cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24515cztM0_level2_quad_clean.evt
Size (bytes)1,165,423,680187,629,120
Size1.1 GB 178.9 MB
Events in quadrant A6,282,2541,281,279
Events in quadrant B8,766,9881,251,864
Events in quadrant C6,230,6081,245,988
Events in quadrant D13,214,0671,081,439

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261622
B0338362
C0263242
D0472372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118781070.900825%
B1187911289.495749%
C118792512.112972%
D11879233919.690210%

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 13693 11880 0 0 0.00% 0.00%
B 13694 11881 678 678 4.95% 5.71%
C 13694 11880 27 27 0.20% 0.23%
D 13694 11881 1922 1922 14.04% 16.18%

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 14 111 700466 2429.28 1438 1405 287.8
A 6 16 39143 131.14 1438 1405 287.8
A 13 254 18390 59.02 1438 1405 287.8
B 3 64 3301582 12738.94 1379 1344 259.1
B 0 190 34725 128.85 1379 1344 259.1
B 12 111 31812 117.61 1379 1344 259.1
C 10 9 324842 1013.69 1376 1383 319.1
C 2 16 309213 964.71 1376 1383 319.1
C 14 238 221184 688.84 1376 1383 319.1
D 1 52 6938878 23032.79 1252 1218 301.2
D 12 218 609971 2021.04 1252 1218 301.2
D 8 195 599514 1986.32 1252 1218 301.2

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