ASTROSAT CZTI

Data Quality Report

Orbit 55379

Creation date: 2025-12-23T11:23:01.797436
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/AS1A14_009T01_9000006534_55379cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55379cztM0_level2_quad_clean.evt
Size (bytes)1,471,219,200276,557,760
Size1.4 GB 263.7 MB
Events in quadrant A19,582,8811,576,656
Events in quadrant B10,139,7001,968,800
Events in quadrant C9,775,2381,804,742
Events in quadrant D13,384,9251,618,787

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04100
B04100
C04100
D04100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0726362
B0455362
C0449152
D0545472

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20382290414.247866%
B203824462.188205%
C203812721.334576%
D2038111945.858398%

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 20417 20382 2285 2285 11.19% 11.21%
B 20417 20383 252 252 1.23% 1.24%
C 20416 20382 206 206 1.01% 1.01%
D 20416 20381 1003 1003 4.91% 4.92%

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 4 159 10466618 20905.09 2048 2000 500.6
A 12 115 438010 871.01 2048 2000 500.6
A 3 78 273003 541.38 2048 2000 500.6
B 5 185 745421 1631.08 2127 2040 455.8
B 0 199 462900 1011.19 2127 2040 455.8
B 10 247 159920 346.41 2127 2040 455.8
C 13 3 800058 1387.43 2105 2084 575.1
C 9 38 181094 311.24 2105 2084 575.1
C 12 249 170800 293.34 2105 2084 575.1
D 15 107 1325995 2303.81 2033 1945 574.7
D 11 129 919303 1596.17 2033 1945 574.7
D 11 176 901469 1565.14 2033 1945 574.7

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