ASTROSAT CZTI

Data Quality Report

Orbit 20220828_A09_002T01_9000005322_level2

Creation date: 2026-01-05T03:58:36.934700
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_002T01_9000005322cztM0_level2.fits modeM0/AS1A09_002T01_9000005322cztM0_level2_quad_clean.evt
Size (bytes)2,125,307,5202,548,425,600
Size2.0 GB 2.4 GB
Events in quadrant A12,943,13716,087,513
Events in quadrant B12,274,65215,859,701
Events in quadrant C12,687,79415,771,910
Events in quadrant D10,891,41213,911,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05367390
B05649880
C05473920
D06934850

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08780
B08770
C08780
D08780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046580
B046610
C046520
D046580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22708651442.265221%
B22706598334.330478%
C22719084183.705269%
D226832137966.082034%

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 319918 227633 0 0 0.00% 0.00%
B 319918 226950 0 0 0.00% 0.00%
C 319918 226244 0 0 0.00% 0.00%
D 319918 227175 0 0 0.00% 0.00%

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 9 19 10720 9.06 3392 3207 829.1
A 7 110 10493 8.79 3392 3207 829.1
A 0 29 10454 8.74 3392 3207 829.1
B 2 9 10674 12.14 3261 3133 621.2
B 3 80 9616 10.44 3261 3133 621.2
B 2 8 8653 8.89 3261 3133 621.2
C 1 81 10905 9.18 3359 3174 842.6
C 1 80 10434 8.62 3359 3174 842.6
C 3 202 10102 8.22 3359 3174 842.6
D 10 189 8007 6.23 3127 2868 825.5
D 7 3 7926 6.13 3127 2868 825.5
D 6 38 7865 6.05 3127 2868 825.5

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