ASTROSAT CZTI

Data Quality Report

Orbit 10459

Creation date: 2024-06-27T15:59:29.370377
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/AS1A03_126T01_9000001512_10459cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10459cztM0_level2_quad_clean.evt
Size (bytes)386,712,00068,094,720
Size368.8 MB 64.9 MB
Events in quadrant A2,558,916315,621
Events in quadrant B2,697,969415,917
Events in quadrant C2,598,470489,706
Events in quadrant D3,483,772458,880

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286153
B0286155
C0286152
D0278142

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04238032040
B03220820735
C02830116679
D03206517877

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03014
B03216
C03216
D02812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4192631.502863%
B5338541.011615%
C5739220.383342%
D6328280.442478%

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 8601 5224 0 0 0.00% 0.00%
B 8608 6327 2 2 0.02% 0.03%
C 8608 6671 0 0 0.00% 0.00%
D 8607 6705 0 0 0.00% 0.00%

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 13 251 545279 5392.12 488 478 101.0
A 3 80 73267 720.42 488 478 101.0
A 1 162 18021 173.63 488 478 101.0
B 4 239 117876 960.47 629 613 122.1
B 0 219 34258 275.58 629 613 122.1
B 0 187 27903 223.52 629 613 122.1
C 14 234 10127 61.29 661 662 154.4
C 14 67 7030 41.24 661 662 154.4
C 13 61 4904 27.47 661 662 154.4
D 8 195 499978 2859.06 720 700 174.6
D 1 52 138670 790.07 720 700 174.6
D 2 14 35723 200.56 720 700 174.6

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