ASTROSAT CZTI

Data Quality Report

Orbit 52268

Creation date: 2025-07-21T20:43:42.934703
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/AS1C09_011T05_9000006474_52268cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52268cztM0_level2_quad_clean.evt
Size (bytes)885,928,32076,397,760
Size844.9 MB 72.9 MB
Events in quadrant A4,036,909633,667
Events in quadrant B8,848,171585,426
Events in quadrant C15,625,62926,472
Events in quadrant D3,742,369581,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168454
B0311401
C0512331
D0162431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69692443.501220%
B6969153622.040465%
C6969672296.455733%
D69691071.535371%

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 7399 6970 157 157 2.12% 2.25%
B 7399 6969 990 990 13.38% 14.21%
C 7398 6968 5713 5713 77.22% 81.99%
D 7399 6970 73 73 0.99% 1.05%

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 4 249 577977 3242.08 718 701 178.1
A 11 3 122763 685.52 718 701 178.1
A 3 14 74616 415.12 718 701 178.1
B 12 32 1654498 11802.74 665 644 140.1
B 7 0 1585361 11309.35 665 644 140.1
B 10 254 1145836 8172.67 665 644 140.1
C 15 158 11854477 202106.24 199 196 58.7
C 15 224 1107726 18882.52 199 196 58.7
C 3 242 700151 11933.69 199 196 58.7
D 8 176 220318 1110.71 700 668 197.8
D 11 176 166154 836.82 700 668 197.8
D 2 249 134235 675.41 700 668 197.8

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