ASTROSAT CZTI

Data Quality Report

Orbit 17841

Creation date: 2024-06-27T17:42:04.156811
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/AS1T03_061T01_9000002654_17841cztM0_level2.evt modeM0/AS1T03_061T01_9000002654_17841cztM0_level2_quad_clean.evt
Size (bytes)233,259,84055,621,440
Size222.5 MB 53.0 MB
Events in quadrant A1,661,208360,769
Events in quadrant B1,627,031361,763
Events in quadrant C1,601,610353,884
Events in quadrant D1,922,516347,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075370
B074040
C073710
D084860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3675170.462585%
B367540.108844%
C367550.136054%
D3675651.768707%

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 3675 3675 12 12 0.33% 0.33%
B 3675 3675 1 1 0.03% 0.03%
C 3675 3675 0 0 0.00% 0.00%
D 3675 3675 50 50 1.36% 1.36%

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 63062 735.56 415 407 85.2
A 0 226 3606 37.56 415 407 85.2
A 3 137 3229 33.13 415 407 85.2
B 12 111 9856 116.4 413 403 81.2
B 11 111 8367 98.07 413 403 81.2
B 14 111 7171 83.34 413 403 81.2
C 14 238 60608 643.37 392 395 93.6
C 3 233 6053 60.45 392 395 93.6
C 5 218 4129 39.9 392 395 93.6
D 7 238 383223 3871.22 397 384 98.9
D 10 70 21879 217.35 397 384 98.9
D 2 234 16856 166.56 397 384 98.9

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