ASTROSAT CZTI

Data Quality Report

Orbit 08846

Creation date: 2024-06-27T15:38:00.143139
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/AS1A03_036T01_9000001230_08846cztM0_level2.evt modeM0/AS1A03_036T01_9000001230_08846cztM0_level2_quad_clean.evt
Size (bytes)212,693,76046,526,400
Size202.8 MB 44.4 MB
Events in quadrant A1,796,520303,026
Events in quadrant B1,520,156307,507
Events in quadrant C1,364,898301,532
Events in quadrant D1,563,271291,943

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A072532
B063171
C059251
D064731

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2861431.502971%
B2861642.236980%
C2861150.524292%
D2861260.908773%

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 3741 2862 5 5 0.13% 0.17%
B 3741 2862 11 11 0.29% 0.38%
C 3741 2862 0 0 0.00% 0.00%
D 3741 2862 11 11 0.29% 0.38%

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 8 5 386655 5214.18 355 348 74.1
A 15 174 25178 335.14 355 348 74.1
A 14 239 7696 99.18 355 348 74.1
B 4 48 79395 1128.79 357 347 70.0
B 0 246 13756 191.48 357 347 70.0
B 0 219 10201 140.71 357 347 70.0
C 1 3 3981 44.58 346 347 81.5
C 8 128 3602 39.93 346 347 81.5
C 13 61 2606 27.71 346 347 81.5
D 2 152 87929 1024.12 343 333 85.5
D 1 52 68260 794.16 343 333 85.5
D 2 238 41233 478.18 343 333 85.5

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