ASTROSAT CZTI

Data Quality Report

Orbit 38442

Creation date: 2024-06-27T21:52:48.223390
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_018T01_9000005386_38442cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38442cztM0_level2_quad_clean.evt
Size (bytes)352,140,48093,602,880
Size335.8 MB 89.3 MB
Events in quadrant A2,940,701632,513
Events in quadrant B3,800,611630,586
Events in quadrant C2,645,610613,631
Events in quadrant D3,210,718564,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121823
B0151622
C0113832
D0133332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5619180.320342%
B56192173.861897%
C561950.088984%
D5619621.103399%

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 7201 5620 8 8 0.11% 0.14%
B 7201 5620 112 112 1.56% 1.99%
C 7201 5620 1 1 0.01% 0.02%
D 7201 5620 42 42 0.58% 0.75%

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 412571 3232.77 630 617 127.4
A 9 143 72038 560.47 630 617 127.4
A 13 248 11286 83.72 630 617 127.4
B 8 3 597394 5031.58 618 599 118.6
B 0 183 528509 4450.81 618 599 118.6
B 4 232 139846 1173.99 618 599 118.6
C 15 214 239839 1679.17 609 612 142.5
C 0 10 11282 74.89 609 612 142.5
C 14 254 9827 64.68 609 612 142.5
D 12 235 157114 1063.21 606 589 147.2
D 2 16 136204 921.18 606 589 147.2
D 2 250 128327 867.67 606 589 147.2

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