ASTROSAT CZTI

Data Quality Report

Orbit 35760

Creation date: 2022-07-18T21:23:03.638707
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/AS1A10_058T14_9000005134_35760cztM0_level2.evt modeM0/AS1A10_058T14_9000005134_35760cztM0_level2_quad_clean.evt
Size (bytes)622,463,04074,952,000
Size593.6 MB 71.5 MB
Events in quadrant A4,266,210479,750
Events in quadrant B3,597,331485,869
Events in quadrant C3,429,245469,903
Events in quadrant D7,125,063386,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176583
B0148622
C0140752
D0255512

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A641290.140362%
B6412931.450405%
C6412821.278852%
D6412142222.177168%

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 9068 6414 1 1 0.01% 0.02%
B 9068 6414 66 66 0.73% 1.03%
C 9068 6414 82 82 0.90% 1.28%
D 9068 6413 1437 1437 15.85% 22.41%

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 15 223 1233354 8316.35 733 719 148.2
A 10 83 167549 1125.57 733 719 148.2
A 13 6 17671 114.37 733 719 148.2
B 5 172 327190 2312.86 725 707 141.2
B 5 255 133540 941.01 725 707 141.2
B 0 213 113758 800.87 725 707 141.2
C 15 214 267602 1608.17 706 710 166.0
C 0 10 236143 1418.61 706 710 166.0
C 0 207 91605 547.69 706 710 166.0
D 1 52 3125747 19726.45 650 631 158.4
D 7 80 556846 3510.96 650 631 158.4
D 13 249 534695 3371.14 650 631 158.4

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