ASTROSAT CZTI

Data Quality Report

Orbit 16491

Creation date: 2024-06-27T17:23:29.809621
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/AS1A05_174T01_9000002440_16491cztM0_level2.evt modeM0/AS1A05_174T01_9000002440_16491cztM0_level2_quad_clean.evt
Size (bytes)201,493,44023,451,840
Size192.2 MB 22.4 MB
Events in quadrant A1,441,321130,830
Events in quadrant B1,457,127132,219
Events in quadrant C1,654,267125,849
Events in quadrant D1,362,710126,294

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060613
B060542
C066272
D059452

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27051866.876155%
B27052198.096118%
C27052308.502773%
D27051636.025878%

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 2881 2707 0 0 0.00% 0.00%
B 2881 2706 4 4 0.14% 0.15%
C 2881 2706 0 0 0.00% 0.00%
D 2881 2706 1 1 0.03% 0.04%

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 15 174 59894 784.51 359 349 75.9
A 0 226 3101 36.26 359 349 75.9
A 3 137 2869 33.2 359 349 75.9
B 4 173 25227 341.04 358 347 73.0
B 15 35 12107 161.2 358 347 73.0
B 12 111 9098 119.95 358 347 73.0
C 3 233 240782 2815.65 349 350 85.4
C 14 238 50813 590.96 349 350 85.4
C 13 61 2513 25.33 349 350 85.4
D 2 234 9080 95.25 358 346 91.7
D 13 248 6223 64.09 358 346 91.7
D 13 249 3810 37.78 358 346 91.7

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