ASTROSAT CZTI

Data Quality Report

Orbit 04864

Creation date: 2024-06-27T14:48:11.462288
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/AS1G05_009T02_9000000618_04864cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04864cztM0_level2_quad_clean.evt
Size (bytes)574,145,28074,594,880
Size547.5 MB 71.1 MB
Events in quadrant A3,172,321469,575
Events in quadrant B3,658,945468,411
Events in quadrant C2,982,091459,589
Events in quadrant D7,144,617418,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136193
B0149512
C0131902
D0256459

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63281622.560051%
B63281983.128951%
C6328500.790139%
D6327154224.371740%

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 8928 6329 12 12 0.13% 0.19%
B 8928 6329 28 28 0.31% 0.44%
C 8928 6330 0 0 0.00% 0.00%
D 8928 6329 1213 1213 13.59% 19.17%

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 94725 591.6 778 762 158.8
A 0 50 35934 221.44 778 762 158.8
A 8 15 31635 194.38 778 762 158.8
B 10 16 222672 1481.85 786 769 149.7
B 4 239 131842 875.29 786 769 149.7
B 4 80 98300 651.3 786 769 149.7
C 12 4 14305 77.48 753 759 174.8
C 1 16 13352 72.03 753 759 174.8
C 13 61 6199 31.12 753 759 174.8
D 10 15 2337579 14597.45 656 638 160.1
D 1 31 631964 3943.51 656 638 160.1
D 2 63 552456 3446.87 656 638 160.1

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