ASTROSAT CZTI

Data Quality Report

Orbit 12868

Creation date: 2024-06-27T16:33:20.481863
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/AS1G08_041T01_9000001892_12868cztM0_level2.evt modeM0/AS1G08_041T01_9000001892_12868cztM0_level2_quad_clean.evt
Size (bytes)297,532,80051,428,160
Size283.7 MB 49.0 MB
Events in quadrant A1,713,918350,075
Events in quadrant B3,017,754318,096
Events in quadrant C1,654,808344,162
Events in quadrant D2,406,057317,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A069042
B0110081
C067851
D091371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31921013.164160%
B319261019.110276%
C3192662.067669%
D31922768.646617%

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 4468 3195 0 0 0.00% 0.00%
B 4468 3195 376 376 8.42% 11.77%
C 4468 3195 0 0 0.00% 0.00%
D 4468 3195 187 187 4.19% 5.85%

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 15 174 9590 102.16 438 429 89.7
A 11 29 8907 94.54 438 429 89.7
A 8 15 5466 56.17 438 429 89.7
B 4 239 809508 10698.61 393 384 75.6
B 3 64 492305 6504.41 393 384 75.6
B 0 85 99096 1305.22 393 384 75.6
C 13 61 3185 28.05 423 425 98.4
C 14 234 2721 23.33 423 425 98.4
C 4 112 1966 15.66 423 425 98.4
D 1 52 807136 8106.44 413 402 99.5
D 2 136 13072 127.31 413 402 99.5
D 13 172 11559 112.11 413 402 99.5

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