ASTROSAT CZTI

Data Quality Report

Orbit 20220124_T04_086T01_9000004884_level2

Creation date: 2022-01-27T10:55:02.149464
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/AS1T04_086T01_9000004884cztM0_level2_bc.evt modeM0/AS1T04_086T01_9000004884cztM0_level2_quad_clean.evt
Size (bytes)4,662,014,400817,643,520
Size4.3 GB 779.8 MB
Events in quadrant A14,577,8325,318,248
Events in quadrant B51,963,4984,704,075
Events in quadrant C22,935,8825,319,629
Events in quadrant D47,170,8754,825,215

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013640
B013640
C013640
D013640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02670
B02670
C02670
D02670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01371770
B02802520
C01633090
D02568350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A669641150.171734%
B669641631624.365331%
C6696420563.070306%
D66964745111.126874%

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 93460 66974 5 5 0.01% 0.01%
B 93460 66963 2233 2233 2.39% 3.33%
C 93460 66964 317 317 0.34% 0.47%
D 93460 66960 692 692 0.74% 1.03%

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 15 169 308708 399.76 3503 3443 763.6
A 9 143 302815 392.05 3503 3443 763.6
A 10 83 177240 227.6 3503 3443 763.6
B 5 31 21539819 33781.55 3224 3156 637.5
B 5 15 8284171 12989.27 3224 3156 637.5
B 5 172 7060826 11070.38 3224 3156 637.5
C 4 254 2930647 3721.28 3472 3461 786.6
C 15 214 2791276 3544.1 3472 3461 786.6
C 0 10 1263651 1602.06 3472 3461 786.6
D 8 195 11122203 13758.95 3362 3270 808.1
D 10 118 7014906 8676.44 3362 3270 808.1
D 2 250 5969065 7382.28 3362 3270 808.1

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