ASTROSAT CZTI

Data Quality Report

Orbit 59106

Creation date: 2026-08-31T02:34:57.592814
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_004T02_9000006600_59106cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59106cztM0_level2_quad_clean.evt
Size (bytes)790,862,40077,892,480
Size754.2 MB 74.3 MB
Events in quadrant A3,350,587646,597
Events in quadrant B4,319,978659,632
Events in quadrant C4,677,960598,332
Events in quadrant D16,423,9902,821

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146142
B0173372
C0184262
D0529772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6470721.112828%
B64703224.976816%
C64702153.323029%
D6470645399.737249%

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 7545 6471 47 47 0.62% 0.73%
B 7545 6471 215 215 2.85% 3.32%
C 7545 6471 121 121 1.60% 1.87%
D 7544 6469 5573 5573 73.87% 86.15%

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 404608 2299.38 708 690 175.7
A 10 251 112870 638.6 708 690 175.7
A 3 245 17957 98.3 708 690 175.7
B 5 236 639381 4377.86 691 665 145.9
B 4 236 388030 2655.06 691 665 145.9
B 4 201 152816 1042.87 691 665 145.9
C 3 233 1620424 8552.36 686 679 189.4
C 13 3 103752 544.23 686 679 189.4
C 7 2 85214 446.35 686 679 189.4
D 12 1 15630836 594390.63 85 81 26.3
D 11 129 126293 4799.46 85 81 26.3
D 2 249 123518 4693.94 85 81 26.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct