ASTROSAT CZTI

Data Quality Report

Orbit 01068

Creation date: 2024-06-27T14:06:57.606803
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/AS1P01_998T02_9000000190_01068cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01068cztM0_level2_quad_clean.evt
Size (bytes)921,715,20099,751,680
Size879.0 MB 95.1 MB
Events in quadrant A6,769,846665,646
Events in quadrant B7,347,284673,829
Events in quadrant C6,881,062640,499
Events in quadrant D6,528,632633,562

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242571
B0259456
C0246031
D0235691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5833160.274301%
B5833400.685753%
C5833741.268644%
D5833330.565747%

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 6918 5834 121 121 1.75% 2.07%
B 6918 5834 274 274 3.96% 4.70%
C 6918 5834 169 169 2.44% 2.90%
D 6918 5834 184 184 2.66% 3.15%

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 0 253 6691 11.72 1762 1773 419.6
A 11 79 6590 11.48 1762 1773 419.6
A 3 111 5641 9.22 1762 1773 419.6
B 5 63 138247 315.95 1830 1842 431.7
B 5 191 111765 254.61 1830 1842 431.7
B 8 219 32503 71.02 1830 1842 431.7
C 15 241 290028 642.01 1613 1670 449.2
C 0 191 243006 537.31 1613 1670 449.2
C 3 111 21876 44.99 1613 1670 449.2
D 1 83 390916 786.79 1597 1655 494.7
D 2 216 71542 141.26 1597 1655 494.7
D 13 73 46149 89.93 1597 1655 494.7

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