ASTROSAT CZTI

Data Quality Report

Orbit 17089

Creation date: 2024-06-27T17:31:53.821529
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_004T04_9000002534_17089cztM0_level2.evt modeM0/AS1A05_004T04_9000002534_17089cztM0_level2_quad_clean.evt
Size (bytes)170,377,92046,707,840
Size162.5 MB 44.5 MB
Events in quadrant A1,145,000314,992
Events in quadrant B1,270,180316,435
Events in quadrant C1,318,019303,099
Events in quadrant D1,253,725299,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051351
B054821
C054171
D054201

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251120.079650%
B251160.238949%
C251190.358423%
D2511200.796495%

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 2511 2511 0 0 0.00% 0.00%
B 2511 2511 4 4 0.16% 0.16%
C 2511 2511 0 0 0.00% 0.00%
D 2511 2511 15 15 0.60% 0.60%

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 4 2 2965 43.73 296 289 61.2
A 0 226 2693 39.29 296 289 61.2
A 12 194 2336 33.45 296 289 61.2
B 7 220 63471 1094.81 293 286 57.7
B 0 219 25217 431.98 293 286 57.7
B 0 197 12475 211.2 293 286 57.7
C 3 233 162540 2407.52 284 285 67.4
C 14 238 43237 637.32 284 285 67.4
C 9 54 2753 36.62 284 285 67.4
D 10 70 50684 707.0 291 282 71.3
D 1 52 33397 464.51 291 282 71.3
D 15 0 25523 354.06 291 282 71.3

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