ASTROSAT CZTI

Data Quality Report

Orbit 20712

Creation date: 2024-06-27T18:18:40.041244
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_165T07_9000003062_20712cztM0_level2.evt modeM0/AS1A05_165T07_9000003062_20712cztM0_level2_quad_clean.evt
Size (bytes)565,542,720119,784,960
Size539.3 MB 114.2 MB
Events in quadrant A3,296,214846,910
Events in quadrant B3,598,447830,310
Events in quadrant C3,352,209788,738
Events in quadrant D6,462,775731,155

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137451
B0146871
C0138871
D0234901

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6166671.086604%
B61671041.686395%
C61671211.962056%
D616794815.372142%

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 7476 6168 0 0 0.00% 0.00%
B 7476 6168 21 21 0.28% 0.34%
C 7477 6168 0 0 0.00% 0.00%
D 7477 6169 762 762 10.19% 12.35%

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 0 226 7550 39.53 857 843 169.7
A 3 137 6355 32.49 857 843 169.7
A 12 194 6351 32.46 857 843 169.7
B 7 220 257048 1641.83 830 813 156.1
B 0 190 32494 203.0 830 813 156.1
B 0 197 23569 145.81 830 813 156.1
C 14 238 129328 705.76 797 804 182.1
C 7 247 91313 497.01 797 804 182.1
C 8 208 11143 56.77 797 804 182.1
D 5 222 2536245 13515.42 789 769 187.6
D 1 52 673522 3586.13 789 769 187.6
D 1 20 98049 518.55 789 769 187.6

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