ASTROSAT CZTI

Data Quality Report

Orbit 20210826_A10_094T33_9000004664_level2

Creation date: 2021-08-27T15:36:59.041795
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/AS1A10_094T33_9000004664cztM0_level2_bc.evt modeM0/AS1A10_094T33_9000004664cztM0_level2_quad_clean.evt
Size (bytes)250,122,24082,946,880
Size238.5 MB 79.1 MB
Events in quadrant A1,149,972563,177
Events in quadrant B2,482,140553,893
Events in quadrant C1,416,469534,364
Events in quadrant D2,201,167531,939

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099360
B0144540
C0111840
D0138220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4676310.662960%
B4676811.732250%
C46761573.357571%
D4675931.989305%

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 5981 4675 0 0 0.00% 0.00%
B 5981 4675 4 4 0.07% 0.09%
C 5981 4675 10 10 0.17% 0.21%
D 5981 4675 14 14 0.23% 0.30%

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 11340 173.07 293 289 63.9
A 13 254 8762 132.7 293 289 63.9
A 13 6 5886 87.66 293 289 63.9
B 6 159 1252856 22631.94 287 283 55.3
B 5 172 51873 932.15 287 283 55.3
B 0 190 17101 303.87 287 283 55.3
C 0 10 215000 3222.88 277 278 66.6
C 3 233 116240 1740.54 277 278 66.6
C 4 175 9173 133.51 277 278 66.6
D 8 195 803150 11792.16 288 279 68.1
D 13 249 179247 2628.59 288 279 68.1
D 2 250 37287 543.55 288 279 68.1

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