ASTROSAT CZTI

Data Quality Report

Orbit 58978

Creation date: 2026-08-22T12:16:22.610315
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_004T07_9000006598_58978cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58978cztM0_level2_quad_clean.evt
Size (bytes)671,423,04085,227,840
Size640.3 MB 81.3 MB
Events in quadrant A4,629,485616,414
Events in quadrant B6,202,114612,660
Events in quadrant C2,982,138602,521
Events in quadrant D10,559,020315,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179633
B0227321
C0132971
D0356731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62072423.898824%
B620889814.465206%
C62081081.739691%
D6208289046.552835%

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 7377 6208 111 111 1.50% 1.79%
B 7378 6209 556 556 7.54% 8.95%
C 7378 6209 54 54 0.73% 0.87%
D 7378 6209 2831 2831 38.37% 45.60%

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 14 238 957938 5508.2 706 690 173.8
A 3 14 735316 4227.19 706 690 173.8
A 15 233 100216 572.69 706 690 173.8
B 6 255 2268011 15893.04 672 648 142.7
B 2 247 626158 4384.5 672 648 142.7
B 4 171 175557 1226.02 672 648 142.7
C 12 2 184519 967.26 689 681 190.1
C 12 252 46362 240.35 689 681 190.1
C 12 250 15816 79.63 689 681 190.1
D 12 110 6322332 39397.53 557 530 160.5
D 12 1 1374849 8564.77 557 530 160.5
D 6 239 432179 2690.04 557 530 160.5

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