ASTROSAT CZTI

Data Quality Report

Orbit 20230702_A12_025T16_9000005724_level2

Creation date: 2023-07-04T10:37:50.302573
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/AS1A12_025T16_9000005724cztM0_level2.fits modeM0/AS1A12_025T16_9000005724cztM0_level2_quad_clean.evt
Size (bytes)143,467,200125,300,160
Size136.8 MB 119.5 MB
Events in quadrant A850,406705,768
Events in quadrant B816,792702,050
Events in quadrant C840,716673,460
Events in quadrant D705,172580,897

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0357900
B0347270
C0331380
D0436710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16401520.317054%
B163971230.750137%
C16400100.060976%
D164028184.987197%

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 21807 16403 0 0 0.00% 0.00%
B 21807 16402 0 0 0.00% 0.00%
C 21807 16402 0 0 0.00% 0.00%
D 21807 16382 0 0 0.00% 0.00%

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 29 730 8.85 222 207 59.1
A 9 19 718 8.65 222 207 59.1
A 7 110 688 8.14 222 207 59.1
B 2 9 719 11.42 216 205 45.0
B 5 128 597 8.71 216 205 45.0
B 2 8 593 8.62 216 205 45.0
C 1 81 681 8.09 221 206 58.7
C 1 80 661 7.75 221 206 58.7
C 3 203 658 7.7 221 206 58.7
D 7 3 562 6.82 201 183 55.6
D 4 160 529 6.23 201 183 55.6
D 3 14 516 5.99 201 183 55.6

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