ASTROSAT CZTI

Data Quality Report

Orbit 58100

Creation date: 2026-06-24T12:36:43.865686
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_042T02_9000006586_58100cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58100cztM0_level2_quad_clean.evt
Size (bytes)1,001,116,800156,182,400
Size954.7 MB 148.9 MB
Events in quadrant A5,872,7721,058,317
Events in quadrant B14,287,478950,153
Events in quadrant C5,798,4371,022,212
Events in quadrant D10,213,753905,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258682
B0506042
C0255112
D0382682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114523342.916521%
B11453250221.845805%
C114531501.309701%
D114539248.067755%

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 12747 11452 189 189 1.48% 1.65%
B 12747 11452 1779 1779 13.96% 15.53%
C 12748 11453 46 46 0.36% 0.40%
D 12748 11453 963 963 7.55% 8.41%

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 10 251 863764 2785.43 1259 1226 309.7
A 3 245 32641 101.45 1259 1226 309.7
A 6 226 28600 88.4 1259 1226 309.7
B 10 128 5305268 21253.03 1166 1119 249.6
B 5 172 3500027 14019.66 1166 1119 249.6
B 5 185 446690 1785.34 1166 1119 249.6
C 12 252 415973 1240.76 1231 1220 334.3
C 9 38 358040 1067.45 1231 1220 334.3
C 6 223 100623 297.37 1231 1220 334.3
D 12 110 4077959 12064.9 1205 1153 337.9
D 8 160 601329 1776.16 1205 1153 337.9
D 2 249 291794 860.12 1205 1153 337.9

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