ASTROSAT CZTI

Data Quality Report

Orbit 07177

Creation date: 2024-06-27T15:16:33.143010
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/AS1G06_102T01_9000000978_07177cztM0_level2.evt modeM0/AS1G06_102T01_9000000978_07177cztM0_level2_quad_clean.evt
Size (bytes)536,279,04091,854,720
Size511.4 MB 87.6 MB
Events in quadrant A3,792,726583,612
Events in quadrant B3,308,222610,071
Events in quadrant C3,101,490592,803
Events in quadrant D5,588,988532,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156784
B0143913
C0138293
D0210643

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632540.814234%
B6632550.829312%
C6632280.422195%
D66324787.207479%

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 9072 6635 5 5 0.06% 0.08%
B 9072 6634 3 3 0.03% 0.05%
C 9072 6635 0 0 0.00% 0.00%
D 9072 6635 455 455 5.02% 6.86%

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 8 15 706947 4394.18 788 773 160.7
A 14 238 42816 261.61 788 773 160.7
A 3 1 7719 43.22 788 773 160.7
B 0 214 104398 679.9 805 786 152.4
B 0 219 33223 212.85 805 786 152.4
B 15 204 25890 164.73 805 786 152.4
C 9 68 76282 423.03 773 774 178.5
C 10 22 9690 49.95 773 774 178.5
C 13 61 6082 29.74 773 774 178.5
D 12 233 1470165 8106.32 745 720 181.3
D 2 216 778527 4290.84 745 720 181.3
D 8 195 238626 1312.43 745 720 181.3

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