ASTROSAT CZTI

Data Quality Report

Orbit 36798

Creation date: 2024-06-27T21:31:49.537185
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/AS1A11_075T01_9000005244_36798cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36798cztM0_level2_quad_clean.evt
Size (bytes)574,888,32072,002,880
Size548.3 MB 68.7 MB
Events in quadrant A2,437,689468,903
Events in quadrant B8,456,968443,089
Events in quadrant C3,015,203477,854
Events in quadrant D3,165,413442,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104223
B0284792
C0119642
D0128582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4948100.202102%
B4948206841.794665%
C4948791.596605%
D49481392.809216%

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 7071 4949 4 4 0.06% 0.08%
B 7071 4948 2038 2038 28.82% 41.19%
C 7071 4949 66 66 0.93% 1.33%
D 7071 4949 152 152 2.15% 3.07%

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 10 83 206253 1817.2 563 553 113.2
A 9 143 38899 338.76 563 553 113.2
A 13 6 9382 78.0 563 553 113.2
B 12 1 6070908 65557.74 490 478 92.6
B 5 255 76936 825.71 490 478 92.6
B 0 190 69518 745.6 490 478 92.6
C 0 207 396181 3121.31 549 554 126.8
C 15 214 222429 1750.49 549 554 126.8
C 1 23 149247 1173.12 549 554 126.8
D 13 249 736276 5572.4 540 525 132.0
D 2 153 126563 954.58 540 525 132.0
D 2 249 54271 407.06 540 525 132.0

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