ASTROSAT CZTI

Data Quality Report

Orbit 54703

Creation date: 2025-11-12T13:47:55.181216
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_103T01_9000006524_54703cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54703cztM0_level2_quad_clean.evt
Size (bytes)567,953,28087,416,640
Size541.6 MB 83.4 MB
Events in quadrant A4,143,996585,742
Events in quadrant B4,572,583625,224
Events in quadrant C3,565,228578,212
Events in quadrant D8,248,977414,648

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167491
B0179161
C0153011
D0289491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63503485.480315%
B63503355.275591%
C63501021.606299%
D6351184729.082034%

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 7450 6351 238 238 3.19% 3.75%
B 7450 6351 201 201 2.70% 3.16%
C 7450 6351 67 67 0.90% 1.05%
D 7451 6352 1560 1560 20.94% 24.56%

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 0 8 499315 3083.57 653 640 161.7
A 13 248 467514 2886.92 653 640 161.7
A 3 14 234581 1446.58 653 640 161.7
B 2 249 916185 6634.18 648 627 138.0
B 7 0 817697 5920.53 648 627 138.0
B 0 213 132221 953.54 648 627 138.0
C 4 5 370894 2062.08 644 639 179.6
C 13 3 266059 1478.22 644 639 179.6
C 14 254 154606 857.5 644 639 179.6
D 11 129 4916021 29972.74 568 542 164.0
D 3 224 323078 1966.7 568 542 164.0
D 3 12 197847 1203.09 568 542 164.0

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