ASTROSAT CZTI

Data Quality Report

Orbit 22445

Creation date: 2024-06-27T18:41:02.008855
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/AS1A07_056T01_9000003330_22445cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22445cztM0_level2_quad_clean.evt
Size (bytes)1,567,621,440412,200,000
Size1.5 GB 393.1 MB
Events in quadrant A10,276,9652,792,552
Events in quadrant B12,250,9252,821,799
Events in quadrant C11,028,0852,695,020
Events in quadrant D12,403,6692,632,663

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0455484
B0509614
C0474124
D0525434

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224371450.646254%
B224374071.813968%
C224373211.430673%
D224374351.938762%

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 25267 22438 0 0 0.00% 0.00%
B 25267 22440 173 173 0.68% 0.77%
C 25267 22439 33 33 0.13% 0.15%
D 25267 22438 269 269 1.06% 1.20%

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 3 1 86791 159.13 2634 2575 529.2
A 15 174 41509 73.57 2634 2575 529.2
A 13 254 32141 55.86 2634 2575 529.2
B 10 245 1753846 3546.17 2616 2544 493.9
B 0 190 81675 160.23 2616 2544 493.9
B 12 111 61510 119.4 2616 2544 493.9
C 0 239 506964 857.43 2526 2535 588.3
C 14 238 402593 680.02 2526 2535 588.3
C 10 22 239085 402.09 2526 2535 588.3
D 1 52 2298962 3698.72 2553 2476 620.9
D 13 172 168275 267.04 2553 2476 620.9
D 2 234 94919 148.89 2553 2476 620.9

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