ASTROSAT CZTI

Data Quality Report

Orbit 32375

Creation date: 2024-06-27T20:39:29.646269
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/AS1A09_131T01_9000004702_32375cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32375cztM0_level2_quad_clean.evt
Size (bytes)1,560,712,320326,998,080
Size1.5 GB 311.8 MB
Events in quadrant A8,148,3732,241,538
Events in quadrant B16,026,1512,174,539
Events in quadrant C9,545,3352,165,703
Events in quadrant D12,352,1262,100,416

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359294
B0606023
C0395193
D0487013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17736920.518719%
B1773610886.134416%
C177367063.980604%
D177365152.903699%

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 19811 17739 0 0 0.00% 0.00%
B 19811 17739 603 603 3.04% 3.40%
C 19811 17739 180 180 0.91% 1.01%
D 19811 17739 358 358 1.81% 2.02%

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 13 6 60506 140.14 2088 2040 417.2
A 13 254 33395 75.16 2088 2040 417.2
A 3 137 20983 45.4 2088 2040 417.2
B 6 159 4790231 12513.27 2024 1972 382.7
B 5 172 1691639 4415.65 2024 1972 382.7
B 10 245 706909 1842.23 2024 1972 382.7
C 3 233 863543 1876.68 1983 1995 459.1
C 14 238 425499 922.5 1983 1995 459.1
C 14 254 149170 320.59 1983 1995 459.1
D 8 195 2756753 5863.55 2000 1947 469.8
D 12 233 608827 1291.73 2000 1947 469.8
D 14 52 408093 864.47 2000 1947 469.8

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