ASTROSAT CZTI

Data Quality Report

Orbit 34746

Creation date: 2022-03-08T11:30:45.744276
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_094T37_9000004986_34746cztM0_level2.evt modeM0/AS1A10_094T37_9000004986_34746cztM0_level2_quad_clean.evt
Size (bytes)205,810,56026,700,480
Size196.3 MB 25.5 MB
Events in quadrant A1,241,054162,624
Events in quadrant B1,460,656162,211
Events in quadrant C1,291,846161,608
Events in quadrant D2,071,600145,996

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051492
B058701
C051791
D078161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243780.328272%
B2437461.887567%
C2437130.533443%
D24372158.822323%

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 3749 2438 5 5 0.13% 0.21%
B 3749 2438 19 19 0.51% 0.78%
C 3749 2438 8 8 0.21% 0.33%
D 3749 2438 163 163 4.35% 6.69%

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 15 223 26981 433.38 294 288 61.6
A 10 83 25167 403.93 294 288 61.6
A 15 174 20052 320.89 294 288 61.6
B 5 255 92883 1618.21 291 283 57.2
B 5 172 88621 1543.73 291 283 57.2
B 0 190 72129 1255.53 291 283 57.2
C 15 214 106001 1521.37 289 290 69.5
C 0 10 42670 609.93 289 290 69.5
C 8 79 6899 95.12 289 290 69.5
D 2 250 428821 6166.06 276 268 69.5
D 8 195 328480 4722.34 276 268 69.5
D 10 118 96083 1378.59 276 268 69.5

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