ASTROSAT CZTI

Data Quality Report

Orbit 32760

Creation date: 2024-06-27T20:41:42.446492
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/AS1A10_057T04_9000004728_32760cztM0_level2.evt modeM0/AS1A10_057T04_9000004728_32760cztM0_level2_quad_clean.evt
Size (bytes)481,792,32061,989,120
Size459.5 MB 59.1 MB
Events in quadrant A2,522,448387,036
Events in quadrant B2,603,142391,740
Events in quadrant C2,547,023384,187
Events in quadrant D6,568,677352,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106682
B0108271
C0109831
D0231201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5168150.290248%
B5168220.425697%
C5168170.328947%
D51684248.204334%

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 7081 5169 9 9 0.13% 0.17%
B 7081 5169 8 8 0.11% 0.15%
C 7081 5169 12 12 0.17% 0.23%
D 7081 5169 367 367 5.18% 7.10%

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 12 16 68267 554.5 614 603 122.0
A 0 254 38698 312.18 614 603 122.0
A 12 194 15067 118.53 614 603 122.0
B 0 219 50696 430.36 612 598 116.4
B 0 197 41550 351.79 612 598 116.4
B 5 172 26130 219.33 612 598 116.4
C 3 233 144206 1040.26 592 597 138.1
C 0 10 61791 443.27 592 597 138.1
C 4 254 9082 61.46 592 597 138.1
D 8 195 3223583 22436.99 573 561 143.6
D 7 80 370469 2575.11 573 561 143.6
D 2 250 307718 2138.27 573 561 143.6

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