ASTROSAT CZTI

Data Quality Report

Orbit 57078

Creation date: 2026-04-16T17:19:46.877003
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_083T10_9000006566_57078cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57078cztM0_level2_quad_clean.evt
Size (bytes)542,891,520107,565,120
Size517.7 MB 102.6 MB
Events in quadrant A3,308,563711,534
Events in quadrant B4,055,063764,535
Events in quadrant C5,496,490662,325
Events in quadrant D6,654,783597,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154410
B0173020
C0214920
D0249020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7488170.227030%
B7489871.161704%
C74893945.261050%
D74897279.707571%

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 7488 7488 7 7 0.09% 0.09%
B 7489 7489 39 39 0.52% 0.52%
C 7489 7489 348 348 4.65% 4.65%
D 7489 7489 751 751 10.03% 10.03%

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 14 86410 427.5 814 792 200.3
A 13 248 37240 181.99 814 792 200.3
A 10 251 18123 86.54 814 792 200.3
B 4 171 384004 2244.47 798 766 170.7
B 10 16 318096 1858.47 798 766 170.7
B 0 63 62198 359.78 798 766 170.7
C 12 254 826871 3958.51 775 770 208.7
C 15 198 485273 2321.64 775 770 208.7
C 14 245 329946 1577.34 775 770 208.7
D 12 33 2919210 13624.9 762 727 214.2
D 2 249 232469 1081.88 762 727 214.2
D 7 96 117647 545.84 762 727 214.2

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