ASTROSAT CZTI

Data Quality Report

Orbit 21305

Creation date: 2024-06-27T18:26:09.395684
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/AS1T03_140T01_9000003142_21305cztM0_level2.evt modeM0/AS1T03_140T01_9000003142_21305cztM0_level2_quad_clean.evt
Size (bytes)1,244,937,600260,303,040
Size1.2 GB 248.2 MB
Events in quadrant A9,568,7641,729,644
Events in quadrant B8,607,5011,747,954
Events in quadrant C8,124,1861,675,277
Events in quadrant D10,303,1261,608,942

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0388893
B0358313
C0346525
D0413423

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162773482.137986%
B162782091.283942%
C162772781.707931%
D162786213.814965%

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 19727 16277 101 101 0.51% 0.62%
B 19728 16278 24 24 0.12% 0.15%
C 19728 16278 1 1 0.01% 0.01%
D 19728 16279 429 429 2.17% 2.64%

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 15 236 968315 2314.25 2110 2071 417.5
A 9 143 155672 367.89 2110 2071 417.5
A 5 16 148891 351.65 2110 2071 417.5
B 3 64 96558 243.59 2085 2039 388.0
B 0 230 93042 234.53 2085 2039 388.0
B 0 190 76573 192.08 2085 2039 388.0
C 14 238 317428 686.9 1994 2014 459.2
C 10 23 18918 36.81 1994 2014 459.2
C 13 61 13870 25.82 1994 2014 459.2
D 1 52 1696765 3475.99 2018 1961 487.6
D 12 235 209110 424.86 2018 1961 487.6
D 13 153 206062 418.6 2018 1961 487.6

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