ASTROSAT CZTI

Data Quality Report

Orbit 30270

Creation date: 2024-06-27T20:12:56.880645
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/AS1A10_007T01_9000004350_30270cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30270cztM0_level2_quad_clean.evt
Size (bytes)530,383,68051,275,520
Size505.8 MB 48.9 MB
Events in quadrant A2,907,746329,294
Events in quadrant B7,478,147250,053
Events in quadrant C2,377,262322,946
Events in quadrant D2,982,641320,973

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114017463340932046
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01059
B010612
C01039
D010614

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131951668
B0285193072
C0117101840
D0131701291

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47011152.446288%
B4602183139.787049%
C46861312.795561%
D46891192.537855%

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 6841 4781 87 87 1.27% 1.82%
B 6833 4709 1340 1340 19.61% 28.46%
C 6834 4785 1 1 0.01% 0.02%
D 6869 4803 111 111 1.62% 2.31%

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 14 239 708935 6159.95 569 559 115.0
A 13 254 8596 69.89 569 559 115.0
A 3 137 5689 44.61 569 559 115.0
B 6 36 4399295 46587.11 484 472 94.4
B 6 159 1132767 11991.92 484 472 94.4
B 0 229 34724 362.76 484 472 94.4
C 14 238 120596 926.14 546 551 129.6
C 3 233 75262 576.39 546 551 129.6
C 14 254 43612 332.21 546 551 129.6
D 12 33 419610 3004.19 552 539 139.5
D 8 195 221684 1585.32 552 539 139.5
D 13 249 185508 1325.99 552 539 139.5

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