ASTROSAT CZTI

Data Quality Report

Orbit 54731

Creation date: 2025-11-10T19:50:44.151753
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_103T01_9000006524_54731cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54731cztM0_level2_quad_clean.evt
Size (bytes)2,265,269,760368,688,960
Size2.1 GB 351.6 MB
Events in quadrant A13,707,1072,465,337
Events in quadrant B23,066,2432,498,799
Events in quadrant C16,067,0312,349,492
Events in quadrant D28,882,6021,951,682

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05620
B05620
C05620
D05620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0615504
B0880444
C0687594
D01051364

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A275736762.451674%
B27574287610.430115%
C2757411013.992892%
D27574478017.335171%

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 30084 27575 226 226 0.75% 0.82%
B 30085 27574 2100 2100 6.98% 7.62%
C 30085 27575 853 853 2.84% 3.09%
D 30085 27575 4245 4245 14.11% 15.39%

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 7 14 983146 1402.29 2848 2775 699.1
A 0 8 675515 962.27 2848 2775 699.1
A 7 190 348905 495.09 2848 2775 699.1
B 2 249 6470262 11091.2 2734 2636 583.1
B 0 173 3410392 5843.89 2734 2636 583.1
B 5 185 1535636 2628.91 2734 2636 583.1
C 14 254 1376583 1822.55 2759 2728 753.8
C 1 16 982777 1300.13 2759 2728 753.8
C 9 38 932422 1233.32 2759 2728 753.8
D 15 94 9833047 13404.92 2604 2490 733.4
D 11 129 6510781 8874.69 2604 2490 733.4
D 2 62 661633 898.81 2604 2490 733.4

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