ASTROSAT CZTI

Data Quality Report

Orbit 59025

Creation date: 2026-08-25T16:38:46.039242
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_59025cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59025cztM0_level2_quad_clean.evt
Size (bytes)938,070,72091,177,920
Size894.6 MB 87.0 MB
Events in quadrant A5,347,640736,841
Events in quadrant B4,567,877762,199
Events in quadrant C16,370,435145,018
Events in quadrant D7,830,561571,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211172
B0191592
C0537672
D0286262

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78354065.181876%
B78356288.015316%
C7835633680.867900%
D7835137017.485641%

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 7850 7836 167 167 2.13% 2.13%
B 7850 7836 214 214 2.73% 2.73%
C 7850 7836 6162 6162 78.50% 78.64%
D 7850 7836 1187 1187 15.12% 15.15%

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 0 24 1326591 6145.96 888 863 215.7
A 10 251 382036 1767.08 888 863 215.7
A 14 238 73904 338.61 888 863 215.7
B 4 236 522432 2804.84 860 824 186.0
B 2 249 325901 1748.03 860 824 186.0
B 10 247 100655 536.82 860 824 186.0
C 15 219 14393448 112913.68 466 461 127.5
C 1 16 48882 379.87 466 461 127.5
C 14 254 35423 274.28 466 461 127.5
D 12 1 3402643 15468.93 776 740 219.9
D 12 110 882394 4009.0 776 740 219.9
D 2 120 124464 562.59 776 740 219.9

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

TCT plots

Parameter TCT0 TCT_healed
Tct