ASTROSAT CZTI

Data Quality Report

Orbit 57308

Creation date: 2026-05-02T04:18:05.312004
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_049T03_9000006570_57308cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57308cztM0_level2_quad_clean.evt
Size (bytes)147,300,48032,048,640
Size140.5 MB 30.6 MB
Events in quadrant A1,139,611213,849
Events in quadrant B1,227,520223,099
Events in quadrant C1,549,720190,058
Events in quadrant D1,359,212182,456

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073822455
B077672631
C098883767
D093903847

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0101
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06925
B07226
C07232
D07023

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2297311.349586%
B2263683.004861%
C21891135.162175%
D2186442.012809%

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 4042 2549 0 0 0.00% 0.00%
B 3957 2508 7 7 0.18% 0.28%
C 4002 2417 71 71 1.77% 2.94%
D 3945 2400 28 28 0.71% 1.17%

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 0 12 33614 512.04 260 254 65.2
A 3 14 30573 465.36 260 254 65.2
A 8 4 26861 408.39 260 254 65.2
B 5 185 81855 1460.08 251 242 55.9
B 7 252 52513 935.14 251 242 55.9
B 10 16 41081 730.62 251 242 55.9
C 15 224 536502 8281.72 233 230 64.8
C 14 254 42107 646.71 233 230 64.8
C 6 223 36168 555.0 233 230 64.8
D 3 224 203233 2984.46 234 222 68.0
D 8 240 145703 2138.71 234 222 68.0
D 2 249 29016 423.3 234 222 68.0

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