ASTROSAT CZTI

Data Quality Report

Orbit 24430

Creation date: 2024-06-27T19:05:56.422334
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_24430cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24430cztM0_level2_quad_clean.evt
Size (bytes)946,609,920215,951,040
Size902.8 MB 205.9 MB
Events in quadrant A5,920,4551,465,807
Events in quadrant B5,793,9671,494,358
Events in quadrant C5,857,6201,419,830
Events in quadrant D10,282,5931,328,697

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257993
B0251943
C0254093
D0389203

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A120441951.619063%
B120441341.112587%
C120442091.735304%
D120448957.431086%

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 14054 12045 31 31 0.22% 0.26%
B 14054 12045 0 0 0.00% 0.00%
C 14054 12046 1 1 0.01% 0.01%
D 14054 12045 793 793 5.64% 6.58%

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 4 2 243349 825.34 1473 1447 293.1
A 13 254 19119 60.29 1473 1447 293.1
A 3 137 13143 39.91 1473 1447 293.1
B 12 111 33714 115.82 1472 1436 278.7
B 11 111 29846 101.94 1472 1436 278.7
B 14 111 26371 89.47 1472 1436 278.7
C 14 238 225947 689.82 1406 1417 325.5
C 2 16 139050 422.85 1406 1417 325.5
C 3 233 18399 52.17 1406 1417 325.5
D 1 52 1697827 5143.14 1387 1346 329.9
D 8 195 1530972 4637.29 1387 1346 329.9
D 12 218 1274284 3859.1 1387 1346 329.9

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