ASTROSAT CZTI

Data Quality Report

Orbit 17516

Creation date: 2024-06-27T17:37:31.836198
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_140T01_9000002596_17516cztM0_level2.evt modeM0/AS1A05_140T01_9000002596_17516cztM0_level2_quad_clean.evt
Size (bytes)186,814,08019,307,520
Size178.2 MB 18.4 MB
Events in quadrant A1,367,767104,701
Events in quadrant B1,291,404106,127
Events in quadrant C1,305,437100,422
Events in quadrant D1,528,554100,776

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054462
B051821
C052281
D060191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23871586.619187%
B23871194.985337%
C23871305.446167%
D23871586.619187%

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 3422 2387 33 33 0.96% 1.38%
B 3422 2387 1 1 0.03% 0.04%
C 3422 2387 0 0 0.00% 0.00%
D 3422 2387 44 44 1.29% 1.84%

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 4 208 94853 1372.1 331 322 68.9
A 0 226 2874 37.04 331 322 68.9
A 3 137 2426 30.54 331 322 68.9
B 12 111 7654 111.1 327 318 66.0
B 0 219 7032 101.68 327 318 66.0
B 11 111 6624 95.5 327 318 66.0
C 14 238 48135 631.48 315 315 75.7
C 3 233 24032 313.19 315 315 75.7
C 13 61 2292 26.11 315 315 75.7
D 5 222 195644 2450.07 322 313 79.7
D 13 189 91590 1144.9 322 313 79.7
D 13 232 10689 130.15 322 313 79.7

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