ASTROSAT CZTI

Data Quality Report

Orbit 12676

Creation date: 2024-06-27T16:30:53.709823
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/AS1A04_174T01_9000001876_12676cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12676cztM0_level2_quad_clean.evt
Size (bytes)494,942,40095,270,400
Size472.0 MB 90.9 MB
Events in quadrant A2,877,868654,834
Events in quadrant B5,428,366565,343
Events in quadrant C2,862,668644,993
Events in quadrant D3,429,471617,263

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121222
B0199361
C0122071
D0140691

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5754801.390337%
B5754102917.883212%
C5754801.390337%
D57541803.128259%

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 6799 5753 0 0 0.00% 0.00%
B 6800 5754 782 782 11.50% 13.59%
C 6800 5754 24 24 0.35% 0.42%
D 6799 5753 126 126 1.85% 2.19%

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 12 189 80114 533.74 724 711 148.8
A 0 226 6442 38.52 724 711 148.8
A 12 194 5480 32.06 724 711 148.8
B 4 239 1492724 12031.0 651 639 124.0
B 3 64 1106193 8914.32 651 639 124.0
B 3 209 152260 1222.55 651 639 124.0
C 0 207 144838 895.61 696 702 160.9
C 13 61 5159 27.69 696 702 160.9
C 8 222 2574 11.63 696 702 160.9
D 1 52 592852 3567.93 692 681 166.0
D 10 199 127070 761.51 692 681 166.0
D 10 157 27362 160.76 692 681 166.0

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