ASTROSAT CZTI

Data Quality Report

Orbit 41420

Creation date: 2024-06-27T22:28:48.334193
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_035T01_9000005666_41420cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41420cztM0_level2_quad_clean.evt
Size (bytes)376,522,56085,809,600
Size359.1 MB 81.8 MB
Events in quadrant A2,887,166585,682
Events in quadrant B3,397,690564,350
Events in quadrant C3,022,827558,231
Events in quadrant D4,211,674514,369

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117373
B0138912
C0123362
D0160942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5370180.335196%
B53704227.858473%
C53702154.003724%
D53702955.493482%

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 7072 5371 7 7 0.10% 0.13%
B 7072 5371 280 280 3.96% 5.21%
C 7072 5371 216 216 3.05% 4.02%
D 7072 5371 260 260 3.68% 4.84%

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 10 83 538225 4389.35 591 578 122.5
A 13 248 26111 208.45 591 578 122.5
A 12 189 12622 98.33 591 578 122.5
B 0 186 1049512 9516.5 562 546 110.2
B 0 190 95102 857.84 562 546 110.2
B 12 111 13895 121.11 562 546 110.2
C 0 10 580508 4369.92 565 567 132.7
C 15 214 237811 1787.66 565 567 132.7
C 13 61 3689 23.52 565 567 132.7
D 1 52 487366 3475.75 568 551 140.1
D 2 249 484578 3455.84 568 551 140.1
D 1 47 378715 2700.01 568 551 140.1

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