ASTROSAT CZTI

Data Quality Report

Orbit 57144

Creation date: 2026-04-21T03:17:35.560740
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/AS1A14_083T10_9000006566_57144cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57144cztM0_level2_quad_clean.evt
Size (bytes)500,088,96089,386,560
Size476.9 MB 85.2 MB
Events in quadrant A2,739,756620,422
Events in quadrant B5,138,609562,291
Events in quadrant C4,315,169562,014
Events in quadrant D5,832,720526,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128551
B0197051
C0172151
D0217261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247230.368177%
B624898415.749040%
C62484286.850192%
D62484407.042254%

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 7327 6248 4 4 0.05% 0.06%
B 7328 6249 801 801 10.93% 12.82%
C 7328 6249 398 398 5.43% 6.37%
D 7328 6249 432 432 5.90% 6.91%

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 3 14 53856 315.68 678 661 168.5
A 5 113 39525 230.64 678 661 168.5
A 13 254 10972 61.19 678 661 168.5
B 10 16 2482683 18797.2 612 589 132.0
B 10 32 53158 398.11 612 589 132.0
B 5 185 50244 376.04 612 589 132.0
C 15 198 1531649 8763.03 637 632 174.7
C 14 254 135216 770.31 637 632 174.7
C 9 38 61158 346.43 637 632 174.7
D 12 33 1574712 8691.89 630 599 181.1
D 15 142 1229719 6786.92 630 599 181.1
D 7 96 273006 1504.17 630 599 181.1

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