ASTROSAT CZTI

Data Quality Report

Orbit 12079

Creation date: 2024-06-27T16:21:58.479641
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_130T01_9000001792_12079cztM0_level2.evt modeM0/AS1A04_130T01_9000001792_12079cztM0_level2_quad_clean.evt
Size (bytes)979,021,440133,407,360
Size933.7 MB 127.2 MB
Events in quadrant A6,054,225806,214
Events in quadrant B8,788,961777,651
Events in quadrant C5,675,354814,825
Events in quadrant D8,283,167773,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262043
B0342582
C0254752
D0325482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A125451190.948585%
B125457976.353129%
C12545580.462336%
D125454023.204464%

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 13831 12547 12 12 0.09% 0.10%
B 13831 12547 424 424 3.07% 3.38%
C 13831 12548 2 2 0.01% 0.02%
D 13831 12548 326 326 2.36% 2.60%

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 1 162 99149 324.43 1481 1450 301.1
A 14 63 57641 186.6 1481 1450 301.1
A 1 178 39465 126.24 1481 1450 301.1
B 4 239 2480377 8847.4 1455 1416 280.2
B 0 231 201830 715.28 1455 1416 280.2
B 15 204 186550 660.74 1455 1416 280.2
C 8 208 14688 39.02 1448 1458 339.1
C 14 234 12898 33.74 1448 1458 339.1
C 13 61 10661 27.14 1448 1458 339.1
D 1 52 1666342 4781.68 1428 1387 348.2
D 8 195 543070 1555.69 1428 1387 348.2
D 10 50 106911 303.06 1428 1387 348.2

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