ASTROSAT CZTI

Data Quality Report

Orbit 00261

Creation date: 2024-06-27T13:58:29.666367
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_122T02_9000000028_00261cztM0_level2.evt modeM0/AS1P01_122T02_9000000028_00261cztM0_level2_quad_clean.evt
Size (bytes)1,121,731,20067,343,040
Size1.0 GB 64.2 MB
Events in quadrant A6,502,277458,880
Events in quadrant B13,756,115305,882
Events in quadrant C6,274,897450,291
Events in quadrant D7,071,169434,538

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232653
B0452562
C0225652
D0249722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A555240.072046%
B5552302354.448847%
C555240.072046%
D5552550.990634%

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 7257 5553 113 113 1.56% 2.03%
B 7257 5553 3632 3632 50.05% 65.41%
C 7257 5553 67 67 0.92% 1.21%
D 7257 5553 348 348 4.80% 6.27%

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 15 250 16768 41.38 1669 1656 365.2
A 0 96 9288 20.9 1669 1656 365.2
A 15 17 9054 20.26 1669 1656 365.2
B 8 9 7820531 26392.03 1272 1275 296.3
B 0 207 864624 2914.03 1272 1275 296.3
B 8 54 60982 201.53 1272 1275 296.3
C 3 159 174335 401.96 1544 1605 429.7
C 1 192 17026 35.89 1544 1605 429.7
C 2 192 11563 23.17 1544 1605 429.7
D 10 154 743001 1609.33 1468 1522 460.7
D 1 4 323222 698.23 1468 1522 460.7
D 1 5 162587 349.58 1468 1522 460.7

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