ASTROSAT CZTI

Data Quality Report

Orbit 26437

Creation date: 2024-06-27T19:29:01.248349
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/AS1A09_108T02_9000003822_26437cztM0_level2.evt modeM0/AS1A09_108T02_9000003822_26437cztM0_level2_quad_clean.evt
Size (bytes)562,092,48085,777,920
Size536.1 MB 81.8 MB
Events in quadrant A3,261,278544,177
Events in quadrant B3,173,748559,638
Events in quadrant C3,326,127541,871
Events in quadrant D6,800,233477,397

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141580
B0138480
C0142100
D0249430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6803891.308246%
B6803680.999559%
C6804971.425632%
D6803132419.462002%

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 7203 6803 12 12 0.17% 0.18%
B 7203 6803 1 1 0.01% 0.01%
C 7204 6805 8 8 0.11% 0.12%
D 7203 6804 1149 1149 15.95% 16.89%

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 0 13 157535 966.36 803 786 162.2
A 13 254 9099 51.25 803 786 162.2
A 3 137 7843 43.51 803 786 162.2
B 12 111 19342 119.31 802 782 155.6
B 11 111 17467 107.25 802 782 155.6
B 14 111 15515 94.71 802 782 155.6
C 14 238 123458 673.94 774 778 182.0
C 3 233 90997 495.61 774 778 182.0
C 14 176 54415 294.65 774 778 182.0
D 1 52 3377046 19946.06 707 689 169.3
D 11 176 442140 2607.9 707 689 169.3
D 7 80 284298 1675.44 707 689 169.3

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