ASTROSAT CZTI

Data Quality Report

Orbit 37609

Creation date: 2024-06-27T21:42:09.639724
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_9000005342_37609cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37609cztM0_level2_quad_clean.evt
Size (bytes)404,789,76079,300,800
Size386.0 MB 75.6 MB
Events in quadrant A3,108,936506,207
Events in quadrant B2,642,282531,877
Events in quadrant C2,564,404533,786
Events in quadrant D3,606,521481,755

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124043
B0110852
C0105752
D0140712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49521593.210824%
B49521022.059774%
C4952240.484653%
D49523056.159128%

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 7075 4953 150 150 2.12% 3.03%
B 7075 4952 72 72 1.02% 1.45%
C 7074 4951 18 18 0.25% 0.36%
D 7074 4952 316 316 4.47% 6.38%

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 15 222 624424 5579.31 556 546 111.8
A 10 83 289357 2582.82 556 546 111.8
A 13 248 18897 164.11 556 546 111.8
B 5 172 209557 1924.14 563 549 108.6
B 0 189 60904 555.63 563 549 108.6
B 5 200 52727 480.35 563 549 108.6
C 15 214 230462 1772.8 556 560 129.7
C 0 10 93682 718.08 556 560 129.7
C 14 254 64707 494.65 556 560 129.7
D 2 249 1072084 8195.73 537 524 130.7
D 12 227 113199 861.78 537 524 130.7
D 1 47 102078 776.73 537 524 130.7

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