ASTROSAT CZTI

Data Quality Report

Orbit 18524

Creation date: 2024-06-27T17:50:58.627725
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/AS1A05_187T03_9000002748_18524cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18524cztM0_level2_quad_clean.evt
Size (bytes)510,413,760103,507,200
Size486.8 MB 98.7 MB
Events in quadrant A3,527,330689,484
Events in quadrant B3,388,756696,310
Events in quadrant C3,168,669658,609
Events in quadrant D4,932,764637,600

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148601
B0142945
C0135891
D0190181

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64891181.818462%
B64881161.787916%
C6488871.340937%
D64884156.396424%

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 7599 6489 30 30 0.39% 0.46%
B 7597 6487 30 30 0.39% 0.46%
C 7598 6488 0 0 0.00% 0.00%
D 7598 6488 291 291 3.83% 4.49%

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 273094 1646.12 827 811 165.4
A 15 174 34321 202.59 827 811 165.4
A 15 192 17738 102.33 827 811 165.4
B 15 222 77895 492.25 813 792 156.6
B 3 64 57544 362.32 813 792 156.6
B 10 247 28253 175.32 813 792 156.6
C 14 238 123275 668.95 781 789 183.1
C 13 61 5594 26.24 781 789 183.1
C 0 207 2385 8.72 781 789 183.1
D 7 238 1595390 8345.22 787 764 191.1
D 13 168 260021 1356.78 787 764 191.1
D 1 52 36406 186.52 787 764 191.1

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