ASTROSAT CZTI

Data Quality Report

Orbit 18600

Creation date: 2024-06-27T17:52:01.003866
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_075T01_9000002768_18600cztM0_level2.evt modeM0/AS1A05_075T01_9000002768_18600cztM0_level2_quad_clean.evt
Size (bytes)245,505,60058,489,920
Size234.1 MB 55.8 MB
Events in quadrant A1,749,456380,649
Events in quadrant B1,789,593394,749
Events in quadrant C1,821,579385,295
Events in quadrant D1,846,107373,542

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072821
B074041
C075261
D076931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3340581.736527%
B3340752.245509%
C3340822.455090%
D3340822.455090%

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 4705 3341 0 0 0.00% 0.00%
B 4705 3341 2 2 0.04% 0.06%
C 4705 3341 0 0 0.00% 0.00%
D 4705 3341 18 18 0.38% 0.54%

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 12 96 15309 163.4 448 440 91.0
A 15 192 6856 70.51 448 440 91.0
A 13 254 4658 46.35 448 440 91.0
B 0 229 11718 131.26 451 440 85.9
B 0 244 10509 117.19 451 440 85.9
B 12 111 10023 111.53 451 440 85.9
C 14 238 67780 655.86 440 445 102.7
C 9 221 20639 196.7 440 445 102.7
C 3 233 9530 88.49 440 445 102.7
D 1 52 138124 1292.83 442 429 106.5
D 7 238 35517 329.44 442 429 106.5
D 2 234 12722 115.42 442 429 106.5

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