ASTROSAT CZTI

Data Quality Report

Orbit 19226

Creation date: 2024-06-27T18:00:12.127458
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_007T06_9000002844_19226cztM0_level2.evt modeM0/AS1A05_007T06_9000002844_19226cztM0_level2_quad_clean.evt
Size (bytes)600,868,800122,506,560
Size573.0 MB 116.8 MB
Events in quadrant A3,963,833786,807
Events in quadrant B4,093,550805,323
Events in quadrant C4,846,138785,943
Events in quadrant D4,718,813743,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176313
B0178692
C0202492
D0202562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8482490.577694%
B84821031.214336%
C84821962.310776%
D84823404.008489%

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 9422 8484 5 5 0.05% 0.06%
B 9422 8484 2 2 0.02% 0.02%
C 9422 8484 0 0 0.00% 0.00%
D 9422 8484 257 257 2.73% 3.03%

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 9 143 52098 250.55 1015 990 204.0
A 13 254 10346 45.87 1015 990 204.0
A 0 226 8723 37.91 1015 990 204.0
B 4 216 36285 181.99 1024 997 193.9
B 12 111 23883 118.03 1024 997 193.9
B 11 111 20813 102.2 1024 997 193.9
C 3 233 824969 3571.23 988 992 230.7
C 14 238 153796 662.27 988 992 230.7
C 0 207 10914 43.0 988 992 230.7
D 11 176 573666 2440.95 970 945 234.6
D 9 68 317565 1349.44 970 945 234.6
D 1 52 93855 395.99 970 945 234.6

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