ASTROSAT CZTI

Data Quality Report

Orbit 30846

Creation date: 2024-06-27T20:20:16.812850
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_071T40_9000004458_30846cztM0_level2.evt modeM0/AS1A10_071T40_9000004458_30846cztM0_level2_quad_clean.evt
Size (bytes)764,256,96070,914,240
Size728.9 MB 67.6 MB
Events in quadrant A3,366,212476,228
Events in quadrant B11,084,038367,786
Events in quadrant C3,681,341436,896
Events in quadrant D4,594,445432,378

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135162
B0371192
C0145593
D0177032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6205250.402901%
B6205359257.888799%
C62041672.691812%
D62043185.125725%

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 7560 6206 0 0 0.00% 0.00%
B 7559 6205 2777 2777 36.74% 44.75%
C 7559 6205 63 63 0.83% 1.02%
D 7559 6205 295 295 3.90% 4.75%

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 13 254 11229 60.36 872 860 171.8
A 3 137 7888 40.91 872 860 171.8
A 0 226 7602 39.25 872 860 171.8
B 6 36 6632876 48921.49 726 711 135.6
B 6 159 1505246 11098.05 726 711 135.6
B 5 172 36600 264.73 726 711 135.6
C 0 10 300666 1597.99 811 820 187.6
C 14 238 134174 710.69 811 820 187.6
C 3 233 45245 236.76 811 820 187.6
D 13 174 613531 3313.6 789 773 184.9
D 8 195 607102 3278.83 789 773 184.9
D 1 52 220111 1186.11 789 773 184.9

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