ASTROSAT CZTI

Data Quality Report

Orbit 35676

Creation date: 2022-09-12T16:36:01.188039
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_029T03_9000005108_35676cztM0_level2.evt modeM0/AS1A09_029T03_9000005108_35676cztM0_level2_quad_clean.evt
Size (bytes)155,537,28022,501,440
Size148.3 MB 21.5 MB
Events in quadrant A1,000,626139,544
Events in quadrant B1,622,914139,347
Events in quadrant C1,038,702138,335
Events in quadrant D925,587133,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040392
B059721
C040751
D038511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1768110.622172%
B176821412.104072%
C1768372.092760%
D1768140.791855%

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 3320 1769 6 6 0.18% 0.34%
B 3320 1769 130 130 3.92% 7.35%
C 3320 1769 28 28 0.84% 1.58%
D 3320 1769 7 7 0.21% 0.40%

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 10 83 61633 1327.89 218 214 46.3
A 7 16 50033 1077.1 218 214 46.3
A 15 169 36625 787.21 218 214 46.3
B 5 172 395967 9250.57 210 204 42.8
B 5 31 212646 4965.62 210 204 42.8
B 5 15 122416 2856.59 210 204 42.8
C 0 10 128848 2520.2 212 213 51.0
C 15 214 77274 1509.77 212 213 51.0
C 0 239 3188 58.29 212 213 51.0
D 13 249 48095 878.7 214 208 54.5
D 10 199 24025 437.03 214 208 54.5
D 2 249 11916 214.83 214 208 54.5

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