ASTROSAT CZTI

Data Quality Report

Orbit 55259

Creation date: 2025-12-15T07:54:22.040038
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_009T01_9000006534_55259cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55259cztM0_level2_quad_clean.evt
Size (bytes)354,631,68096,163,200
Size338.2 MB 91.7 MB
Events in quadrant A2,888,282620,565
Events in quadrant B2,870,421670,787
Events in quadrant C3,551,133595,226
Events in quadrant D3,300,763562,041

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137972
B0137572
C0155472
D0148042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6632290.437274%
B6632450.678528%
C66321592.397467%
D6632660.995175%

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 7617 6633 9 9 0.12% 0.14%
B 7617 6633 19 19 0.25% 0.29%
C 7617 6633 125 125 1.64% 1.88%
D 7617 6633 50 50 0.66% 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 4 249 101520 599.66 682 666 168.2
A 7 243 46726 273.86 682 666 168.2
A 4 3 28730 166.86 682 666 168.2
B 5 185 108015 728.94 683 656 147.3
B 12 111 17684 115.62 683 656 147.3
B 11 111 16369 106.69 683 656 147.3
C 13 3 551276 2914.6 673 665 188.9
C 14 254 67088 351.6 673 665 188.9
C 9 38 62113 325.27 673 665 188.9
D 7 96 236486 1242.12 667 639 189.9
D 3 12 128170 671.66 667 639 189.9
D 7 129 61775 321.98 667 639 189.9

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