ASTROSAT CZTI

Data Quality Report

Orbit 56793

Creation date: 2026-03-28T13:56:27.091735
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/AS1A14_083T03_9000006562_56793cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56793cztM0_level2_quad_clean.evt
Size (bytes)452,301,12098,982,720
Size431.3 MB 94.4 MB
Events in quadrant A4,891,926619,969
Events in quadrant B4,610,803682,845
Events in quadrant C3,330,313628,012
Events in quadrant D3,372,206585,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189222
B0184752
C0149082
D0151672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69105067.322721%
B69104055.861071%
C69101091.577424%
D69101672.416787%

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 7795 6910 399 399 5.12% 5.77%
B 7795 6910 223 223 2.86% 3.23%
C 7795 6910 22 22 0.28% 0.32%
D 7795 6910 101 101 1.30% 1.46%

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 3 62 1024462 5714.21 725 706 179.2
A 3 14 538964 3004.35 725 706 179.2
A 10 251 364246 2029.14 725 706 179.2
B 8 128 1020869 6606.38 725 697 154.4
B 4 206 207359 1338.29 725 697 154.4
B 0 171 122864 791.12 725 697 154.4
C 12 252 181752 909.83 730 720 199.0
C 15 230 93547 466.53 730 720 199.0
C 1 16 67292 334.58 730 720 199.0
D 2 249 352574 1725.0 725 693 204.0
D 2 252 53057 256.7 725 693 204.0
D 5 173 50519 244.26 725 693 204.0

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