ASTROSAT CZTI

Data Quality Report

Orbit 15444

Creation date: 2024-06-27T17:08:43.944643
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/AS1G08_033T01_9000002278_15444cztM0_level2.evt modeM0/AS1G08_033T01_9000002278_15444cztM0_level2_quad_clean.evt
Size (bytes)160,931,52038,476,800
Size153.5 MB 36.7 MB
Events in quadrant A1,226,250259,336
Events in quadrant B1,153,381262,916
Events in quadrant C1,139,894255,345
Events in quadrant D1,218,277244,086

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049422
B047071
C046031
D048161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1973934.713634%
B1973683.446528%
C1973512.584896%
D1973804.054739%

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 3309 1975 4 4 0.12% 0.20%
B 3309 1975 1 1 0.03% 0.05%
C 3309 1975 0 0 0.00% 0.00%
D 3309 1975 10 10 0.30% 0.51%

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 14 238 79248 1350.42 284 278 58.5
A 14 237 32531 551.54 284 278 58.5
A 4 2 10638 177.16 284 278 58.5
B 4 142 21221 387.04 280 273 54.1
B 3 209 7557 134.57 280 273 54.1
B 0 214 6361 112.48 280 273 54.1
C 3 233 82206 1301.29 271 271 63.0
C 13 61 2032 27.97 271 271 63.0
C 8 222 943 10.67 271 271 63.0
D 1 52 66945 970.78 276 268 68.7
D 2 33 18131 260.08 276 268 68.7
D 7 223 15882 227.33 276 268 68.7

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