ASTROSAT CZTI

Data Quality Report

Orbit 35038

Creation date: 2024-06-27T21:08:44.555776
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/AS1A10_123T17_9000005018_35038cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35038cztM0_level2_quad_clean.evt
Size (bytes)801,288,000118,428,480
Size764.2 MB 112.9 MB
Events in quadrant A4,996,465721,916
Events in quadrant B5,429,726732,772
Events in quadrant C5,384,703717,583
Events in quadrant D7,734,013674,773

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216654
B0228523
C0221813
D0302973

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10677200.187319%
B10677560.524492%
C10677390.365271%
D106772232.088602%

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 13453 10677 7 7 0.05% 0.07%
B 13453 10676 26 26 0.19% 0.24%
C 13453 10677 30 30 0.22% 0.28%
D 13453 10677 212 212 1.58% 1.99%

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 83 123159 484.18 1247 1222 251.8
A 7 16 29463 112.14 1247 1222 251.8
A 13 6 16339 60.03 1247 1222 251.8
B 5 172 197264 820.79 1237 1203 238.9
B 4 232 104470 432.32 1237 1203 238.9
B 0 199 97715 404.04 1237 1203 238.9
C 15 214 442680 1572.16 1212 1221 280.8
C 0 10 88339 310.25 1212 1221 280.8
C 12 250 46498 161.24 1212 1221 280.8
D 8 195 1508551 5117.31 1204 1171 294.6
D 2 250 487426 1650.76 1204 1171 294.6
D 14 52 420906 1424.93 1204 1171 294.6

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