ASTROSAT CZTI

Data Quality Report

Orbit 35751

Creation date: 2022-05-13T11:35:21.937862
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/AS1A09_143T10_9000005130_35751cztM0_level2.evt modeM0/AS1A09_143T10_9000005130_35751cztM0_level2_quad_clean.evt
Size (bytes)143,913,60024,416,640
Size137.2 MB 23.3 MB
Events in quadrant A885,955162,458
Events in quadrant B1,054,759159,670
Events in quadrant C951,381154,861
Events in quadrant D1,353,830142,480

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035972
B041251
C037371
D051331

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162230.184957%
B1622825.055487%
C1622402.466091%
D16221469.001233%

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 3385 1623 0 0 0.00% 0.00%
B 3385 1623 58 58 1.71% 3.57%
C 3385 1623 26 26 0.77% 1.60%
D 3384 1622 141 141 4.17% 8.69%

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 10 83 63565 1435.38 210 206 44.1
A 13 6 5405 117.78 210 206 44.1
A 13 254 2325 48.01 210 206 44.1
B 5 172 200555 4966.26 201 197 40.3
B 4 232 16302 399.19 201 197 40.3
B 0 189 14850 363.2 201 197 40.3
C 0 10 100653 2106.56 198 199 47.7
C 15 214 70634 1477.05 198 199 47.7
C 15 208 5984 121.31 198 199 47.7
D 14 52 486032 9946.18 195 189 48.8
D 14 226 37690 767.72 195 189 48.8
D 2 250 31036 631.5 195 189 48.8

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