ASTROSAT CZTI

Data Quality Report

Orbit 00143

Creation date: 2024-06-27T13:56:57.256975
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/AS1P01_140T01_9000000004_00143cztM0_level2.evt modeM0/AS1P01_140T01_9000000004_00143cztM0_level2_quad_clean.evt
Size (bytes)411,914,88030,934,080
Size392.8 MB 29.5 MB
Events in quadrant A3,012,912193,803
Events in quadrant B3,054,256196,214
Events in quadrant C2,828,334192,198
Events in quadrant D3,417,281180,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06713
B06919
C07826
D07018

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0194
B0183
C0161
D0205

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141353509
B0140603271
C0131343015
D0154323546

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241230.124378%
B2411311.285774%
C240630.124688%
D2402984.079933%

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 5388 2444 63 63 1.17% 2.58%
B 5385 2445 110 110 2.04% 4.50%
C 5387 2438 39 39 0.72% 1.60%
D 5387 2439 327 327 6.07% 13.41%

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 22 89709 720.7 737 718 123.5
A 13 145 29575 233.7 737 718 123.5
A 13 224 9243 69.04 737 718 123.5
B 10 48 102474 622.09 738 734 163.5
B 8 236 45667 274.74 738 734 163.5
B 2 2 38908 233.41 738 734 163.5
C 3 32 83202 435.51 682 708 189.4
C 10 69 48009 249.71 682 708 189.4
C 10 56 3933 17.03 682 708 189.4
D 10 182 73981 432.04 718 707 169.6
D 14 53 49400 287.11 718 707 169.6
D 12 141 37751 218.42 718 707 169.6

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