ASTROSAT CZTI

Data Quality Report

Orbit 34638

Creation date: 2022-02-23T13:30:39.312725
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/AS1T05_008T01_9000004956_34638cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34638cztM0_level2_quad_clean.evt
Size (bytes)1,262,750,400162,293,760
Size1.2 GB 154.8 MB
Events in quadrant A6,708,7941,031,230
Events in quadrant B10,595,669959,098
Events in quadrant C7,207,8921,020,468
Events in quadrant D12,798,763949,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284724
B0399223
C0292333
D0478543

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13819560.405239%
B13819142510.311889%
C13819700.506549%
D138198606.223316%

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 19408 13822 20 20 0.10% 0.14%
B 19408 13822 1116 1116 5.75% 8.07%
C 19408 13822 49 49 0.25% 0.35%
D 19408 13822 689 689 3.55% 4.98%

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 9 143 93448 277.96 1672 1641 330.3
A 10 83 81829 242.78 1672 1641 330.3
A 15 174 50291 147.29 1672 1641 330.3
B 5 172 4072655 13801.04 1578 1536 295.0
B 4 171 107563 359.43 1578 1536 295.0
B 10 245 78424 260.65 1578 1536 295.0
C 15 214 574120 1576.21 1595 1608 363.2
C 0 10 179485 489.72 1595 1608 363.2
C 14 67 136808 372.22 1595 1608 363.2
D 8 195 3080372 8002.26 1575 1533 384.7
D 12 235 1484996 3855.69 1575 1533 384.7
D 13 249 499827 1295.12 1575 1533 384.7

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